In March 2007 a mud flow, or "lahar" flowed down the side of the mountain after the crater lake overflowed, and large eruptions in 1995 and 1996 blanketed the surrounding area in ash.
In order to determine the time sequence of recent eruption in Tianchi volcano, the TL thermal-stability has been investigated for pumice and sanidine phenocryst within the volcanics.
Dermatitis herpetiformis (Duhring's disease) presents with intense pruritus and a vesicular eruption.It is associated with a usually asymptomatic gluten-sensitive enteropathy.
Around 50 people are believed to have been visiting the island at the time of the eruption including more than 30 passengers from a Royal Caribbean cruise liner.