Report copyright - USGS Open-File Report 2006-1386, map · Open-File Report 2006-1386 Caldera boundary 50 100 100 100 100 ^_ ^_ ^_^_ ^_ ^_ 10,780 yrs 235 yrs 130 yrs 50 yrs 235 yrs ^_ 170 yrs 105 yrs
Please pass captcha verification before submit form