Apparently she comes back to this same beach every two years and makes the laborious trek up the sand up to 8 times in a season to lay all her eggs. Her young (those that survive) will come back to lay their eggs near this spot when they reach maturity - 25 years old!
These are her eggs, they look like slimy ping pong balls! She lays them in layers, covering up each batch with sand before laying more.
It took several hours before she finally headed back down to the sea.
She is expected back in a few weeks. We'll keep looking out for her and with luck we can also be here when this nest hatches out.