Based on known weapons and the damage that they cause we can examine these crater chains and other craters for signs of similarities. From the pictures we have seen most bomb craters and meteor or asteroid craters have a very similar appearance. There also may be indications of large explosions like something highly volatile exploded.
Some of the most interesting comments have come from past military and explosives handling experts. Here are some of the photos of crater chains, craters, and some our comments to go along with them.