mountain lake landscape panorama - glacial lake - sureanu lake - bottomless lake, alba, romania - `switzerland of the east`

action adventure alba amazing apuseni area atraction autumn bats blue bottomless canyon cave ceiling cliffs climb climbing eroded escape europe fish fishing forest formation frogs glacial gracial green holes karst lake landscape landscapes large leaf life light located mountain mountains natural nature panorama park passing relax relaxing retezat river rock rocks romania snakes spring steep summer sun sureanu surroundings switzerland top touring tourist travel trees type view water waterfalls wild wilderness wildlife winter zen