A dwarf planet would've liquified the whole world. Perhaps it was only a small moon, and the heat off the impace completely pushed away the land to form a crater?
after closer observation, this planet actually suffered a dwarf planet impact, forming that large crater, this is after it cooled off ig, kinda cool tbh
dang, this is nice art! (+1)
either a asteroid or a small dwarf planet since it mostly retains a spherical shape