Rock

Rock is a block in Lunacraft that makes up most of the moon.

General Information
Rock is the most common block on every moon. The very last layer of your moon is made of Rock, and it's completely indestructible.

Geology
Rock generates underneath the Gravel layer of your moon. Although most of this is just Rock, various ores, such as Notchium Ore, Aluminum Ore, and others, will also generate here.

Prior to Update 1.7.0, Air would occasionally generate straight through Rock to the very last layer of your moon, creating a Chasm.