This is level 17 of the Low-power Tunnel.
In this level, you need to walk on a long spiral platform. Fortunately, the spiral platform is quite thick, so you don't have to afraid that the momentum will bring you out of the platform. Just be careful that there are holes in the spiral.
This is the last easy level in the later part of the Low-power Tunnel. It is going to be a lot harder from now on.