Appears to be a mushroom of the same species as the ones on the rest of the rock. It's just either young and still developing, or it was shaded. Either way, it will look like the others in a few months.
Appears to be a mushroom of the same species as the ones on the rest of the rock. It's just either young and still developing, or it was shaded. Either way, it will look like the others in a few months.