Impact Craters are generated structures in Telicraft. They spawn over the ground and are the only source of Meteor Dust.
Because deserts are so flat, the Impact Craters will a have a big change of failing to spawn if the biome is Desert, Desert Hills or Beach. The same thing also applies with Superflat worlds. Impact Craters are only able to spawn in Y coordinates 3+ due to them overriding Bedrock.