The road to the hot pond floods with the tide.
The pool is heated by hot springs from the volcano. Puna is the only region in all the Hawaiian Islands where you can find hot springs or steam vents. This pool is a local favorite and is thought to be therapeutic. Is you sit still long enough you can also reap the benefits of fish massage at no extra charge!
The water is circulated by the waves crashing over the break wall and thru and aquaduct. So he temperature varies depending on the tide. There is also a lifeguard on duty during daylight hours.