A "swarm" of over 20,000 earthquakes has rocked Iceland in the past 10 days — and it could spark a volcanic eruption links to this tweet by Almannavarnadeild ríkislögreglustjóra; The National Commissioner Of The Icelandic Police, Department of Civil Protection and Emergency Management:
Earlier today a tremor pulse was detected south of Mt Keilir, in the Reykjanes Peninsula, SW Iceland. No eruption has yet been detected but due to risks related to volcanic activity, all traffic near Keilir and Mt Fagradalsfjall is prohibited, including drone flights.
I can certainly understand large craft and especially those containing people, but why might Civil Protection and Emergency Management prohibit even drones that could be used to obtain scientific data on Mt. Keilir including changes in the mountain's appearance which might indicate an eruption was imminent?