No Man's Sky player dug a tunnel through a mountain instead of going around it

While some No Man's Sky travelers are out here building highways and underwater bridges to haul scrap metal, one player took a more direct approach – literally. Using the terrain leveling tool, they dug a full tunnel straight through a mountain to connect a scrap heap and a refinery in their main save. The whole thing took about 15 minutes.

The goal was simple: run a Colossus back and forth between two points as fast as possible to unlock exocraft parts. As luck would have it, the junkyard and the refinery were unusually close – just a two-minute drive apart. The only thing in the way was a mountain, so instead of driving around it, the player hollowed it out. Inside, they even built ramps out of construction panels and pushed the Colossus up to 130 speed units using three S-class max speed upgrades in supercharged slots.

There is one catch, though – No Man's Sky's terraforming system stores terrain changes in the save file as a fixed-size buffer, and as new edits come in, old ones get automatically erased.

That means the tunnel will eventually "grow back," especially if the player keeps reshaping terrain elsewhere. It's the same reason underground bases tend to get swallowed by rock over time.

That said, negaultimate has been logging in for several days now – and the tunnel is still holding.

Despite being a temporary build, the idea is worth stealing. And for anyone who wants a permanent route, placing bases at both ends of the tunnel helps – base anchors keep terrain changes in the save buffer longer.