Subterranean Kaiju are primarily terrestrial kaiju that can travel underground. Examples are Telesdon, Golza and Antlar. This does not include kaiju such as Gubila and Twin Tail, who can move underground, but are primarily aquatic by nature. Such a group does not include alien creatures that can travel underground, such as Geomos and Gagi. Quite a few of them are ancient dinosaur or dinosaur-like creatures.