With over one dozen known active volcanoes, Katmai will remain a center of attention for volcanologists. Volcanoes typically shows signs of unrest such as earthquakes, deformation of the land, and/or increased gas emissions before they erupt. The Alaska Volcano Observatory (AVO) monitors and studies Alaska's hazardous volcanoes to predict and record eruptive activity, and to mitigate volcanic hazards to life and property. AVO operates over 20 seismic monitoring stations and two webcams (Katmai and Fourpeaked) within the park and many more within the region. More information on the eruptive history and potential hazards of Katmai’s volcanoes can be found in the Preliminary Volcano Hazard Assessment for the Katmai Volcanic Cluster.