Not just holes in the ground, but large man-made caves that have been used for centuries for various activities at the farm "Ægissíða" next to Hella. The owner will walk around the area, tell you stories about the place and show you the main cave which will be lit up with about 300 candles. There are 12 caves in total, but now only a handful that are accessible.
Available all year round and only about 600m walk from Hella village center.
Prices: ISK 1800 per adult, free for children 12 years and younger.