Now that's an interesting one at the centre with cracks either side..... Hmmmm....
# ID: AMZ10009ah
# Latitude: 23.2886°
# Longitude: 312.87°
# Sun Angle: -83.59°
# Scale: 1.42 meters / pixel
# Zoom Level: 3
Wow, that is a beautiful image. I would love to say that is a lava tube skylight.
Unfortunately, it is located on the slopes and terraces of a rather large impact crater, so it cannot be a lava tube. But, it is still very interesting. If you look around the corresponding MyMoonZoo scene (http://www.moonzoo.org/examine/AMZ10009ah
), you can see lots of impact melt features (flows, pools, etc.). It is possible that this hole was formed when a melt pool was disturbed and drained, leaving the overlying melt chill crust unsupported, thus allowing it to collapse. This would be somewhat similar to a lava tube. But it is probably more likely that this hole was formed when a boulder (possibly from that boulder-laden flow coming from the lower right) fell through a relatively thin melt chill crust. Then again, it might be something completely different.