Quick answer: Collect any five ordinary rewards. The captured Yellow area offers six documented options: colour-piece search, microphone test, sound matching, mirrored stage directions, aerial-seat sequence and a remote button room. Install five, cut the key and open the Yellow Tunnel.
Route overview: choose five of six
The walkthrough records the Yellow Tower near 3310, 1560 and the Yellow Tunnel lock near 3500, 1620. Although the source article repeats one list number, its body documents six distinct nearby puzzles. The tower panel needs five rewards, so the group can choose five of the six options below.
| Puzzle | Recorded coordinates | Main challenge |
|---|---|---|
| Colour-piece search | 3370, 1490 | Find 36 colour-coded wooden pieces |
| Microphone test | 3400, 1230 | Identify the loudest microphone |
| Sound-matching rooms | 3200, 1260 | Recreate sounds across a locked room |
| Mirrored stage directions | 3410, 1590 | Invert the booth light position |
| Aerial-seat sequence | 3570, 1600 | Move five symbol tiles across the track |
| Remote button room | 3290, 1670 | Describe one light across the cliffs |
Option 1: collect the colour-coded pieces
Search the full puzzle area in daylight. The recorded duo layout contains nine pieces in each of four colours: yellow by trees, green around rocks, red near the main red area and blue on top of the rail. One elevated green piece is reached through a small orange tunnel; use boulders to climb to the blue rail pieces. The wheel accepts the pieces in any order.
Option 2: identify the strongest microphone
One player sits in the headphone chair while the other speaks into six microphones. The listener signals which mic is loudest. Number the microphones before starting and test each once—“testing mic one,” then two, and so on—so an arm-count response is unambiguous.
Option 3: match sounds between rooms
The outside area contains movable yellow speakers and five booths. A player locked in the side room hears a matching sound in each booth but cannot carry that information out directly. They use the intercom to imitate the sound; the outside player finds the matching speaker and hangs it in the corresponding booth. Work one booth at a time and agree on a short vocal label for each sound.
Option 4: invert the stage directions
One player is locked in the booth and sees one of seven lights. The outside player has seven buttons viewed from the opposite side, so left and right are mirrored. The captured route maps 1→3, 2→2, 3→1 and 4→7, 5→6, 6→5, 7→4. Have the booth player convert first, then signal the converted number by arm count.
Option 5: carry the aerial-seat sequence
Ride the crescent-shaped chair to inspect the fixed five-tile sequence on the far platform. The intended communication uses binoculars and confirmations across the gap. The captured pair instead both inspected the answer, used backpacks to carry four tiles on one trip and returned for the fifth. That shortcut depends on already having bags, so the binocular method remains the no-item fallback.
Option 6: relay a light position across the cliffs
The two grey buildings face one another across a gap. One holds a wall of lights; the other holds matching buttons. The light-side player returns to the yellow communication cage and describes the active light by wall and shape—such as left wall, back wall, curve or right wall. The button-side player presses the corresponding position.
Cut the key and open the Yellow Tunnel
Put any five earned rewards into the Yellow Tower panel and take the released key downstairs. Use the cutter beside the door, follow the arrows down the mountain to a cliff cutter, across to a boulder, toward the Black Tower, and finally to the cutter beside the Yellow Tunnel. Insert the shaped key into the slot on the right side of the entrance.
After the door opens
Continue to the tunnels guide for underground navigation, group preparation and the Big Tunnel achievement.
Sources
Captured two-player route + official world-variant rule · Last fact-check: Aug 11, 2026. See our editorial and corrections policy.
- Captured routeScreen Hype — Tunnel routecaptured two-player Yellow Tower route and tunnel access
- OfficialOfficial Big Walk FAQparty size, accessibility, joining, save and troubleshooting rules
- player-tested clarification that pieces are shared and tower order is flexible
- OfficialOfficial Steam achievementsachievement names and visible requirements