The material is interpreted to be crater impact melt and associated clastic debris.

There are also multiple small crater impacts on the floor, most notably in the southeast.

The crater impact created a ray system that extends for a distance of over 600 kilometers.

The crater floor is lava-flooded, and has a number of small crater impacts.

It is surrounded by rough ground with multiple crater impacts.

Gagarin has been heavily eroded by a long history of crater impacts.

The inner floor is covered by a multitude of crater impacts of various dimensions.

The entire structure has been heavily worn and is marked by many lesser crater impacts.

On Mars, heat can come from molten rock moving under the ground and from crater impacts.

The southern rim is notched and indented by small crater impacts.