Volcanism in the Long Valley Caldera-Mono Craters (LVCMC) volcanic field in eastern California over the past 4 Ma is dominated by the 0.76 Ma caldera-forming eruption of 600 km3 of rhyolite to form the Bishop Tuff. Over the last 150 k.y., volcanism has concentrated along the Mono-Inyo chain, which extends 45 km north from Mammoth Mountain to Mono Lake (Figure 1). Recent eruptions along this chain have occurred from multiple vents 650 ¿ 50 yr B.P. and from a vent in the middle of Mono Lake ˜300 yr B.P. An earthquake swarm in May 1980, including four M6 earthquakes accompanied by uplift of the resurgent dome in the center of the caldera, called attention to the restless nature of Long Valley caldera. Subsequent activity has included recurring swarms of earthquakes (M ≤ 5.8), episodic uplift of the resurgent dome, diffuse outgassing of magmatic CO2, and mid-crustal (10- to 25-km deep), long period (LP) volcanic earthquakes.A 4-day workshop on volcanism of the LVCMC volcanic field was held recently on the southwest rim of the caldera. The workshop included over 65 participants from academia, government agencies, and the private sector, with participants from Italy, Japan, New Zealand, and Great Britain. A field trip led by Marcus Bursik, Wes Hildreth, and Gail Mahood visited deposits of the ˜600 yr B.P. Inyo Domes eruptions, the Horseshoe Lake tree-kill area of high CO2 flux, and outcrops of Bishop Tuff along Owens Gorge.