MENZI-MUCK are a Swiss manufacturer of walking (or spider) excavators, an incredible range of all-terrain excavators.

The Menzi-Muck excavators have the usual boom, stick, bucket and cab on a rotating platform (“house”), but the “house” sits on top of an undercarriage comprised of leg-like extensions, that may or may not have wheels, each of which can move incrementally to “walk” over extremely rough terrain.