The ancient land of Georgia stretches between the Black Sea and the Caucasus Mountains. Here, there are caves and canyons so impregnable that not even a satellite can see inside. Water is the greatest sculptor, and at Martvili Canyon — a gorge carved out by the Abasha River — it was at its best. Take care getting in, but this place seemed like an illustration in one of J.R.R. Tolkien’s books, a place where the elves dwell. It features clear waterfalls that fall down from steep, fern-covered cliffs draped with hanging ivy branches that resemble festive lights. Everything is insanely beautiful.