A Gas Pipe.
The leaf texture used in Pikmin 2's Challenge Mode menu. (Used on Pikipedia in the {{stub}} template.)

This article is a stub. You can help Pikipedia by expanding it.

The Gas pipe is a hazard source from Pikmin 2, they can commonly be found in Caves and in the Areas. Commonly placed inside Bramble Gates functioning as a means of only allowing White Pikmin to be used to break down the gate; however, two thirds of the gate can be taken down by throwing pikmin on top of the gate and having them break the wall down from the top.