Situated on Bo Hon Island,
14 km south of Bai Chay Beach is the Luon Grotto. In
front of the grotto is Con Rua Islet, and the Sky Gate
is on the right. Here the cliffs stretch vertically out
of the pure blue and smooth water. At the water-level,
an arched entrance leads to the grotto, just at the base
of the island. Passing through the pretty entrance, you
come across a tranquil round lake, surrounded by
luxuriant trees and high dangerous stone walls. Monkeys
run to and fro in groups, benjamin fig trees shade the
landscape and many orchids hang their sweet-scented
flowers. In the lake, many species abound: shrimp, fish,
crab and cuttle-fish.
This is an enclosed group of islands. It connects with
the sea via a 4-meter-wide, 100-meter-long, and
3-meter-high mouth. Inside the grotto, the 1-km2
brackish lake is surrounded by mountains. On the cliff
one still find traces of fossils of fresh-water snails,
which prove that men used to live there and this must
have been a deep valley then.
The beauty of the site, is the mingling of a number of
factors: the mountain's size and form, the colour of the
water and the clouds.