Mesa Tumbleweed

Mesa

A mesa is an isolated, flat-topped elevation, ridge, or hill, bounded from all sides by steep escarpments and standing distinctly above a surrounding plain. Mesas consist of flat-lying soft sedimentary rocks, such as shales, capped by a resistant layer of harder rock, like sandstone or limestone, forming a caprock that protects the flat summit. The caprock may also include dissected lava flows or eroded duricrust.

Tumbleweed

A tumbleweed is any structural part of the above-ground anatomy of a number of species of plants. It is a diaspore that, once mature and dry, detaches from its root or stem and rolls due to the force of the wind. It is also the name used for these types of plants.

mesa

Noun

1. A flat area of land higher than other land, with one or more clifflike edges.
2. a structure with components rising above the insulating substrate that surrounds it

tumbleweed

Noun

1. Any plant which habitually breaks away from its roots once dry, forming a light, rolling mass which is driven by the wind from place to place; as Russian thistle, wild indigo, witch grass, Amaranthus albus, etc.
2. One of the dried-out, seed-dispersing, globular forms of such plants.