Complex sentence: Though Newberry Volcano is currently quiet, the United States Geological Survey considers it an active volcano with a "very high" threat level, as hot springs within the caldera remain active, and small earthquakes have occurred within recent local history.
Split into simpler sentences: Though Newberry Volcano is currently quiet, the United States Geological Survey considers it an active volcano with a "very high" threat level. Hot springs within the caldera remain active, and small earthquakes have occurred within recent local history.