Abstract: An all-terrain rover is provided in which the arrangement of flanges of one or more cylinders of first and second cylinder systems allow for forward and backwards motion, as well as turning and sideways motion of the roller. An all-terrain rover is further provided in which the flanges of the first cylinder system are oriented opposite to an orientation of the flanges of the second cylinder system such that, in counter-rotation, a forward or reverse motion results from contact between the flanges and a surface of travel.

Abstract: An all-terrain rover has a ladder frame having one or more crosspieces, two drive units connected on opposite sides of the frame, first and second auger cylinders engaged with the drive. The drive units are in contact with the axes of the auger cylinders and the flange of the first cylinder is wound in an opposite direction to the flange of the second cylinder. The cylinders are counter-rotated to urge the rover forward. Sampling equipment is mounted on the frame. In an embodiment, each cylinder further comprises a conical end cap at each end. Each cylinder may have a frustaconical end cap at each end, and each cylinder may be buoyant.