This is a gas stove for mountaineering, it provides stability even at rough ground. This stove is designed with an assumption for use at a rock ridge or irregular ground. Light weight and stability with large footprint are created by new structure using the gas canister as one of the tripod legs. Rotary function on the valve unit also works effectively at stony rough ground. Efficient 4 pot support/legs provide stability even with big pot on it. Separable burner unit and valve unit are designed for perfect storing in YAEN cooker with 2 gas canisters.