The younger debris avalanche deposit has a volume of about, it was believed that it occurred about 600,000-400,000 years ago, but dating of the andesites cut by the collapse yielded a maximum age of 292,000 ± 25,000 years ago.
It occurred about 600,000-400,000 years ago. This was what it was believed. The younger debris avalanche deposit has a volume of about yielded a maximum age of 292,000 ± 25,000 years ago. A volume of about was dating of the andesites. These andesites were cut by the collapse.