Maps: O44111B7, O44111C7.

T1: Trailhead: near Split Rock.
DUPINET1 431438 4898239 12

T2: Trailhead: where way climbs to Butte Crater.
DUPINET2 433488 4898512 12

D1: Summit of Butte Crater.
DUPINED1 433298 4899371 12

D2: Pine Butte, with two vents.
DUPINED2 435200 4901127 12