Caverns are covered in bright and colourful soft corals, tall bommies are patrolled by an impressive array of sharks, and there are large archway swimthroughs. (dive-the-world.com)
The rock consists of large archways, caverns, caves and crevices. (kosamui.com)
if all goes well, i plan to tackle two large archways in my great room as well! (inmyownstyle.com)