las calderas in the lagunas of neila. spectacular pools of crystal clear water that the palazuelos river

waterfall beauty geology grey holiday natural nobody rocky spain stone travel aquamarine europe environment hiking adventure nature sunny blue sky background landscape colorful view tourism rock scenic voyage summer destination blocks formation park peak outdoor green scenery landmark beautiful mountains calderas water river trekking cave lagunas neila burgos spectacular pools crystal clear that palazuelos has formed eroding canyon along province neila