a group of hikers trekking along the fagradalsfjall trail to view the lava field

outdoor smoke lava magma volcano geology scenic iceland landscape crater dangerous disaster dust eruption exploding explosion flow force steam camera drone energy erupt expedition surface active danger evening fissure hiking hot rock sightseeing spectacle tourist adventure cloud nature red sky volcanic aerial mountain natural tourism travel fagradalsfjall grindavik hiker trekking group hikers trail view field