This NASA Lunar Reconnaissance Orbiter LRO image is of the summit crater of Hortensius Dome Phi. Summit craters of all the Hortensius Domes show no raised rims and are not circular, indicating they are analogous to volcanic calderas.
This NASA Lunar Reconnaissance Orbiter LRO image is of the summit crater of Hortensius Dome Phi. Summit craters of all the Hortensius Domes show no raised rims and are not circular, indicating they are analogous to volcanic calderas.