We left the beach and followed a trail inland through a break in the low ledge adjacent to the sea. Off to the left were the remains of a salt mine from the 1930s, owned by a man named Jorge Egas, hence the name Puerto Egas.

The trail eventually led out onto a rocky volcanic formation along the shoreline with a deep pool informally known as “Darwin’s Toilet, because it fills and empties rapidly with seawater rushing in from underground tunnels.