Ground-Pound Switch

A Ground Pound Switch is a type of springboard appeared in Super Mario Galaxy. To use this item, Mario must Ground Pound it (hence the name). Then, Mario will jump the double than normally he can jump. Upon pressing this switch, a variety of things can happen, mainly making starbits or coins appear.

It is interesting to note that there are also timed ground pound switches, tree stumps which have similar effects, and grey ground-pound switches that make walls fall down, making other areas accessible.

They are also shown in the trailer for Super Mario Galaxy 2 as being able to push down large structures and freeze ice and enemies.