neat i like the volcanic turtle, though he probably couldn't be organic as the lava would melt him, stone on the other hand might work really well, and for whatever reason i thought of a split volcano type of design on at each side so the lava would drip away from him and not on top of him. (and tilted towards the back end a bit more.) Nice keep exploring if you want, the Stonehenge type of design next to the turtle is not bad either.