footbridge crossing pools of blue water in lava field near geothermal spa resort blue lagoon, grindavik, reyjanes, iceland.

blue lagoon water blue hot pool volcanic black iceland lava beautiful bridge clouds cloudy color crossing destination fog footbridge footpath geothermal geothermal field grindavik hot water icelandic lagoon landscape lava field mineral nature people outdoor overcast peninsula pools resort reykjanes reykjanes peninsula rocks season shimmering sky spa svartsengi thermal tourism tourist travel winter wooden bridge