Mesas have a flat top and steep sides.
Mesas often form from the erosion of a plateau.
 Mesas represent the remnants of a plateau, so they can show us what types of rocks covered a wide region.
Mesas have a flat top and steep sides. Mesas often form from the erosion of a plateau.  Mesas represent the remnants of a plateau, so they can show us what types of rocks covered a wide region.
Elysium quadrangle