• ___ of the Moon (national monument in Idaho)
• Astronomical collision results
• Bomb aftermaths
• deep depressions
• Depressions of sorts
• Fails miserably
• Holes in the ground
• Lunar features
• Lunar landscape
• Lunar phenomena
• Lunar sights
• Meteor-impact sites
• Moon depressions
• Moon features
• Moon hollows
• Much of the surface of Mars
• Planetary impact consequences
• Result of meteoric impacts
• Signs of impact
• Volcanic depressions