Years ago, the wife and I visited this place. There was no lava lake then, but the rim smoked considerably, and smelled of rotten eggs. My wife did not like the feeling of the lake, and left as soon as possible. She sensed the seething lava not far below.
This photo shows a one-of-a-kind, completely hollow Pele's tear about 1.5 cm (1/2 inch) long. It was found on the rim of Halemaʻumaʻu and was ejected in association with this morning's explosive event, probably during the aftermath when the lake surface was spattering vigorously.