It builds special egg chambers to keep eggs and young.

Making love with Tim in the vaulted egg chambers.

They excavate the nest hole, the egg chamber sometimes 4 to 7 feet from the entrance.

I led them deeper into the cavern, and after two more turns we found the egg chamber.

We went through them ourselves, to visit the egg chamber.

The females then cover the egg chamber and body pit with sand, and finally return to the sea.

"As you can see, one of the major egg chambers lies here, under this lake."

That would leave this route to the egg chambers available for our use from the near Bore hole.

She then uses her rear flippers to dig a small egg chamber.