Life Grove Tunnel
Life Grove Tunnel is a room in the Tallon Overworld region of Metroid Prime. Not only is it a room, it is considered the worst room in the game by the greater speedrunning community.
Without Boost Ball
It is possible to traverse this room in both directions without Boost Ball. The halfpipe can be avoided with DBJs on either side. After falling into the halfpipe, a somewhat difficult HPBJ can be used on either side to climb back up.