The Environmental Test Floor is a room in the experimental simulated desert area of the Pyrosphere in Metroid: Other M. It is a desert environment, and contains two Dessgeegas and a pair of Sandfang. There is a large crane that can rotate a Grapple Point, by taking hits from Missile fire at the ends. Samus must use the Grapple Point to reach a platform with a Holographic Generator. This will reveal a door.
The name implies that the room served to test the artificial desert environment of the Pyrosphere.