Secondary Markers are the hardest collectible to find in Aphelion. There are 27 of them scattered throughout the game’s missions, each of which can only be found if you look at it with the Pathfinder equipped. The sheer number of Secondary Markers, combined with the difficulty of spotting them, makes their achievement the second rarest for the game on Steam.
We’ll walk you through the specific locations of all 27 Secondary Markers in Aphelion so you can find them all and unlock the Webb achievement easily.
All Aphelion Audiofiles and Datapads Locations (Bookwork Achievement/Trophy Guide)
Learn the location of every Audiofile and Datapad in Aphelion so you can unlock the Bookworm achievement.
All Secondary Marker Locations in Aphelion
Aphelin Secondary Markers List
Players can only spot Secondary Markers while using the Pathfinder and looking directly at each marker’s location. We searched for each of these markers during our playthrough and sorted them into the following table so you can find them without replaying any missions.
|
Secondary Marker |
Chapter |
Location |
|---|---|---|
|
Opening |
2 |
At the edge of the cave you fall into in Chapter 2. |
|
Ice Formation (What could that be?) |
2 |
After falling into the cave in Chapter 2, look to the right to find this Ice Formation. |
|
Double Ring |
3 |
After getting out of the escape pod with Thomas, look to the right and slightly up to see this location. It can also be spotted throughout Chapter 3. |
|
Strange Formations |
3 |
Toward the beginning of Chapter 3, look at the holes on the side of the river on the right to find this Secondary Marker. |
|
Pit |
3 |
The large, deep pit that the river flows into in Chapter 3. It is to the right of the Strange Formations Secondary Marker. |
|
Arch |
3 |
After finding the Strange Formations and Pit Secondary Markers, you’ll squeeze through a small gap. Look to the right afterward to spot this marker. |
|
Unknown Machine |
3 |
Use the Pathfinder to look at the machine beeping on the riverside. |
|
Abandoned Equipment |
3 |
This Secondary Marker is above the second piece of machinery that you connect to for oxygen. |
|
Deserted Gear |
3 |
You’ll find this Secondary Marker above the third, ice-covered piece of machinery that you connect to for oxygen. |
|
Unknown Device |
3 |
After walking beyond the Deserted Gear Secondary Marker, look to the right across the gap to find this one. |
|
Ice Formation (Looks like a sculpture) |
3 |
On the left side of the small clearing that contains the Unknown Device Secondary Marker. |
|
Cave |
4 |
After exiting the cave in Chapter 4, you’ll scan the Light Reflection marker. The Cave marker will be to the left and slightly above this marker. |
|
Ice Formation (Another one) |
4 |
In the lower left corner of the area with the Light Reflection marker and the Cave Secondary Marker. |
|
Ice Formation (Looks intriguing) |
4 |
In the area filled with Geysers after escaping Nemesis for the second time. |
|
Ice Formation (Curious shape) |
5 |
To the left after exiting the main laboratory on your way to the Annex. |
|
Elevator |
6 |
On the left side of the base, beneath the Generator. |
|
Equatorial Storm |
7 |
After sliding down the first slope in Chapter 7, look at the sky with the Pathfinder. |
|
Ice Formation (The planet’s language?) |
7 |
To the left of the third stone pillar that you use as shelter in the storm. |
|
A Way Out? |
7 |
As you approach the end of the cave with Nemesis in this chapter, use the Pathfinder on the path to the exit to find this marker. |
|
Ice Formation (Even underground…) |
7 |
Found in the cave explored after escaping from the Nemesis Arena. |
|
Ice Wall |
8 |
After exiting the facility, turn around and look at the large wall of ice behind you. |
|
Equatorial Storm |
9 |
After starting Chapter 9, use your Pathfinder on the icy peaks behind you. |
|
Crashed Elevator |
9 |
While looking down at the Nexus, use your Pathfinder on the elevator’s wreckage. |
|
Breach |
10 |
Found by scanning into the darkness ahead after hearing Thomas talk about Ariane’s nobility. |
|
Ice Formation (What does it mean?) |
10 |
In a hidden chamber reached by squeezing through a gap in the wall after watching Thomas’ mirage walk across a bridge at the start of Chapter 10. |
|
Styx River |
10 |
After crawling through a hole and coming out near a large part of the river, scan it to gain this Secondary Marker. |
|
Ice Formation (Like it’s calling me) |
10 |
After reaching the second research station along the Styx River, walk forward and look to the right. |
Where to Find Every Secondary Marker in Aphelion
How to Complete the Webb Achievement/Trophy in Aphelion
We’ve created the following list to walk you through the specific locations of all 27 Secondary Markers in Aphelion. They are sorted by the chapter they are found in and their location in that chapter.
- Secondary Marker Name: Opening
- Chapter: “The Pulse”
The Opening Secondary Marker introduces players to the concept of Secondary Markers in Aphelion. After sliding into an icy cave, you’ll be prompted to use your Pathfinder to find a way out. Looking toward the EM Junction and zooming in will unlock the Opening Secondary Marker.
- Secondary Marker Name: Ice Formation (What could that be?)
- Chapter: “The Pulse”
This Secondary Marker is located in the same cave as the first. After finding the Opening Secondary Marker, turn your Pathfinder to the right side of the cave. There will be a natural sculpture made out of ice. Looking at it with the Pathfinder reveals that it is your second Secondary Marker.
Pay careful attention to this Secondary Marker, as it is home to your first Glyph.
- Secondary Marker Name: Double Ring
- Chapter: “The Escape Pod”
After you take control of Thomas outside the escape pod in Chapter 3, immediately turn to the right to face the wall. Use your Pathfinder to see the Double Ring marker through the wall.
If you miss it here, don’t fret! You can spot this marker many more times in Chapter 3, so just make sure to check for it in the sky.
- Secondary Marker Name: Strange Formations
- Chapter: “The Escape Pod”
After walking down the path in Chapter 3, you’ll come to a river with strange holes next to it. Look at these holes through the Pathfinder to register their Secondary Marker.
- Secondary Marker Name: Pit
- Chapter: “The Escape Pod”
This Secondary Marker appears in Chapter 3 next to the Strange Formations marker. Once you’ve reached the more open area filled with rivers, look to the right to see a large pit. Scan it to unlock its Secondary Marker.
- Secondary Marker Name: Arch
- Chapter: “The Escape Pod”
While you can see the Arch earlier on in the chapter, you’ll have to get somewhat close to scan it. We found that we were close enough to register this marker after squeezing through the gap in the wall beyond the Strange Formations and Pit Secondary Markers.
- Secondary Marker Name: Unknown Machine
- Chapter: “The Escape Pod”
While following the path at the start of this chapter, you’ll hear a strange beeping. After squeezing through a small hole, you’ll enter a clearing with a small machine next to a river. Use your Pathfinder to scan this machine and discover its Secondary Marker.
- Secondary Marker Name: Abandoned Equipment
- Chapter: “The Escape Pod”
Once you’ve entered the Abandoned Station area, you’ll continuously need to connect Thomas to oxygen supplies to help him breathe. After connecting to the second oxygen station, look at it through your Pathfinder to get the Abandoned Equipment Secondary Marker.
- Secondary Marker Name: Deserted Gear
- Chapter: “The Escape Pod”
The “Deserted Gear” Secondary Marker is found at the third oxygen station in the Abandoned Station’s area. After connecting to the ice-covered oxygen tank, scan the area above it to unlock this marker.
- Secondary Marker Name: Unknown Device
- Chapter: “The Escape Pod”
After connecting to the icy oxygen tank at the Deserted Gear marker, look to the right. Scanning across the gap with the Pathfinder will reveal the Unknown Device Secondary Marker.
- Secondary Marker Name: Ice Formation (Looks like a sculpture)
- Chapter: “The Escape Pod”
While heading deeper into the Abandoned Station, you’ll enter a clearing without an easily accessible oxygen tank. The Unknown Device will be on your right, while the Ice Formation will be to your left.
On our first attempt at this section, we spent too much time scanning the Ice Formation. When we attempted to head to the next oxygen tank, we ran out of oxygen and had to restart. We highly recommend finding the next oxygen tank before scanning and interacting with the Ice Formation because of the risk of dying.
- Secondary Marker Name: Cave
- Chapter: “The Onyx Forest”
After escaping from Nemesis and exiting its cave, players will scan a Light Reflection in the distance. After scanning it, look to the left and slightly above to find the Cave Secondary Marker.
- Secondary Marker Name: Ice Formation (Another one)
- Chapter: “The Onyx Forest”
This Secondary Marker is found in the same area as the Cave Secondary Marker. After scanning the Cave, you’ll need to walk a little closer to the edge of the ledge you’re standing on. The Ice Formation marker will be diagonally left of the Cave marker, beneath a ledge.
- Secondary Marker Name: Ice Formation (Looks intriguing)
- Chapter: “The Onyx Forest”
While this is the second Secondary Marker named “Ice Formation” in Chapter 4 of Aphelion, it counts as a unique location. Players will find it in the Geyser region, which is unlocked after escaping from Nemesis for the second time.
Follow the path until you reach a fork in the road. At this fork, go to the right to come across a gap with one platform in the middle. You’ll need to jump across this platform to the other side without being hit by the geysers guarding it to reach the Secondary Marker.
This Secondary Marker is home to a Glyph, so it is important to get close to it to unlock both.
- Secondary Marker Name: Ice Formation (Curious shape)
- Chapter: “The Outpost”
Once you’ve explored the Outpost and fixed the rover, you’ll head outside to enter the Annex. Look to the left immediately after entering the main laboratory. You’ll see this Ice Formation, which can immediately be scanned.
- Secondary Marker Name: Elevator
- Chapter: “The Base”
Trying to enter the base will reveal that the power is out. To restore it, you’ll need to start a generator on a hill left of the base. Look toward this generator with the Pathfinder to discover the Elevator Secondary Marker beneath it.
- Secondary Marker Name: Equatorial Storm
- Chapter: “The Storm”
After sliding down the first slope in Chapter 7, look up into the sky. The Equatorial Storm Secondary Marker will now appear.
- Secondary Marker Name: Ice Formation (The planet’s language?)
- Chapter: “The Storm”
When you first enter the Equatorial Storm, you’ll take shelter behind three different rocks before climbing up a platform. The third of these rocks is to the right of a patch of ice. Look across this ice to find the Ice Formation across it.
- Secondary Marker Name: A Way Out?
- Chapter: “The Storm”
Entering the cave in this chapter will have players avoiding Nemesis while looking for the exit. Use the Decoy Anomaly in the first room to quickly get past Nemesis and enter the second chamber in the cave. There will be a water slide leading to the cave’s exit on the other side of the chamber.
Use the Pathfinder to view the cave’s exit to find this Secondary Marker. After scanning it, activate the Decoy Anomaly in this room and slide down the water to the exit.
- Secondary Marker Name: Ice Formation (Even underground…)
- Chapter: “The Storm”
After escaping from the Nemesis Arena, you’ll continue climbing toward the outside world. Along the way, you’ll see yet another Ice Formation. Scan it to obtain its Secondary Marker.
- Secondary Marker Name: Ice Wall
- Chapter: “The Nexus”
After visiting the Medical Bay, players will head outside the Base. As you follow the path, your camera will zoom out to show the surroundings. Turn around when it zooms back in and activate your scanner to find the Ice Wall marker.
If you find yourself running out of oxygen quickly, you can still view this Secondary Marker from the first oxygen tank in this area.
- Secondary Marker Name: Equatorial Storm
- Chapter: “Reunion”
This Secondary Marker is available as soon as you enter Chapter 9. Turn around to face the icy cliffs and activate the Pathfinder. The Equatorial Storm marker will appear here near one of the cliffs’ edges.
- Secondary Marker Name: Crashed Elevator
- Chapter: “Reunion”
After seeing that the elevator to the Nexus is gone, you’ll need to hop over a large crate to come to a staircase on the right. Looking over this area will have Ariane record another message about what’s happening. After she finishes, use the Pathfinder on the area where the elevator’s wreckage is located to find this Secondary Marker.
- Secondary Marker Name: Breach
- Chapter: “The Styx”
While following Thomas’ mirages through the cave system, one of his mirages will talk about Ariane being noble. To reach this mirage, you’ll need to hop across a few platforms in the river and climb up the ledge leading to it. It will then walk across a thin bridge and disappear.
Do not follow the mirage across this bridge yet. Instead, turn to face the darkness and activate your Pathfinder. You’ll be able to spot the Breach Secondary Marker from here.
- Secondary Marker Name: Ice Formation (What does it mean?)
- Chapter: “The Styx”
This is one of the easiest Secondary Markers to miss in Aphelion. The path to reach it starts at the end of the long bridge that one of Thomas’ mirages walks across toward the start of the level. When you climb up this wall, you need to go all the way up and to the right to get on a taller ledge.
Walk to the end of this ledge and clear an anomaly to connect your cable to a crystal poking out of the wall. Swing across to the opposing platform, then turn left to find a gap in the wall. Enter this gap and look at the floor of the room to find the hidden Ice Formation.
- Secondary Marker Name: Styx River
- Chapter: “The Styx”
After finding Phaedra Duan’s body, going down another level will take you to a small work area for the Project Aphelion crew. Moving further requires you to knock down a small wall blocking a hole. Crawl through this hole, then use the Pathfinder on the wide part of the river in front of you to unlock this marker.
- Secondary Marker Name: Ice Formation (Like it’s calling me)
- Chapter: “The Styx”
When you reach the second research station, continue walking forward on the path. When there is a gap in the wall to the right, look through it. The Ice Formation Secondary Marker will be directly across the room through this gap.
- Released
-
April 28, 2026
- ESRB
-
Mature 17+ / Blood, Strong Language, Violence
- Number of Players
-
Single-player
