You stand above a patch of loose ground, as the rocks below raise and cover you whole with rock armor and giant stone fists. By mimicking the spell of stone shape, you can get a much better result than actually stone skin, but Zeno made it so you can actually move within the stone skin. While holding concentration, you have an AC Equal to 18 + spell casting ability, and you have a punch attack that does 2d10 bludgeoning damage. Just like normal stone skin, you do gain resistance towards piercing and slashing, but you do gain weakness to bludgeoning, and when hit with Bludgeoning your movement speed is halved until your next turn.

An alternative way of casting this is using mold earth on the floor, and making it difficult terrain, and then using stone shape on it to cover you or an ally. However, in order to move and attack in that armor you or the armored creature must have a strength of 16 and proficiency in heavy armor. however this only gives you an AC of 18, and the stone fists only do 1d10