2,500 km^2 Caldera (Biggest and oldest- 2mil ago)
10,000 geothermal features
300 Greysers reaching 30m- biggest, OldFaithful erupts/90min
1,000-3,000 Magnitude 2.0 EQ/year
Undulating topography, rifts(Horsts/Grabens), Caldera Rims, Mudpots, Fumaroles, Spring/pools
