A makhtesh is a geological landform considered unique to the Negev desert of Israel. A makhtesh has steep walls of resistant rock surrounding a deep closed valley which is usually drained by a single wadi. The valleys have limited vegetation and soil, containing a variety of different colored rocks and diverse fauna and flora. The best known and largest makhtesh is Makhtesh Ramon.
Here, in this single photo, are three plants from the Exodus story, in the very desert were the Israelites wandered: the Burning Bush in the foreground, Manna to the left, and an Acacia Tree, behind.
Here, in the Negev Desert, his geologic dike, a flat body of rock that cuts through another type of rock in the center of the photo, is made of igneous rock formed after magma, the hot, semi-liquid substance that spews from volcanoes, cools and eventually becomes solid.