On a not so tiny island South of South Korea is an island called Jeju. Made from a volcanic eruption 2 million years ago it houses unique volcanic formations and a massive lava tunnel. Black rocks covered in steaks of sulfur give the rocks streaks of yellow.
Black volcanic rock with an overgrowth of green algae and moss gives the whole back side of waterfall a nice greenish glow. Even on an overcast day the waterfall looks Misty and magical. Btw traveling these Rocky landscapes are no joke and can be seriously dangerous!
Now in Busan looking for my next outdoor study. Thanks for stopping by.