Identify the picture and explain its features.

Answer: The picture is of a Yellowstone caldera volcano
Explanation:
Calderas are somewhat similar to volcanoes, but they are formed by the inwards collapse of a volcano. These are usually formed after a magma chamber empties.
This is Yellowstone Caldera.
It's notable features include the Yellowstone Lake in the northern portion located in Caldera's southern area. It was formed by a cataclysmic volcanic eruption some 640,000 years ago. Yellowstone Caldera, the youngest of three Caldera's, is the largest.