Many tourists waiting to enter in Blue Ice Cave in Vatnajökull glacier

vatnajokull glacier walking on ice many tourists waiting to enter tourism in iceland volcanic blue ice cave guided excursion national park cloudy day overcast many people travel frozen climate change arctic tourist people nature lagoon winter vatnajokull texture scenery melting iceberg global warming climate wind wilderness weather vacation summer cold valley holiday wealthy vacation standing explore adventure polar ash antarctica sightseeing black ice islandia extraterrestrial recreation lesiure natural landmark