Large Oil Rig is an offshore monument in Rust.
Its keycard puzzle needs a Green Keycard, a Blue Keycard and a Red Keycard, plus 1 Electric Fuse.
A Green Keycard spawns here.
No radiation.
1 Locked Crate and 2 Elite Crates at full population.
Counts from the Rust server files, build 25824447 (2026-10-10); compiled 2026-11-02.