This mummified corpse of a frog was found in a hollow flint 'geode' which was cracked open in 1899 by workmen in a quarry in England. There have been many reports of frogs found inside rocks; some still living in a kind of stupor but which revived once exposed to the air.
In 1910 a living toad was found when a piece of
coal was broken open; another was found in 1906 six feet underground
in a solid layer of clay. The most commonly found seem to be stuck in
Some frogs have been found with the impression of their bodies so tightly jammed against the rock 'pocket' that even the skin's crackles can be seen imprinted on the sides of their frog-shaped hole --meaning the rock formed around them somehow.