Taken last December on a beach near the Kona airport. The sin was setting on my first night in Hawai'i. I failed to time the water drainning in the lava tube to the left. Instead I got what looked like a bowl full of cotton. I still liked the colors of the sunset.
Not sure what the offical name of this lava tube is. I have seen it called Pele's well. This particular lava tube goes down 10 feet or so. Then it take a right angle out to the sea. Safe to say that if you fall in you won't be getting back out so easy. The constant surging water will more than likely toss you around against the rocky wall. In other words be very careful around this hole.
Another view of the lava tube as the water is sucked back out into the ocean.