Unique coral reef found on Ly SonVietNamNet Bridge – Experts from the Viet Nam Institute of Geosciences and Mineral Resources have found a unique complex of fossilised coral – believed to date from 4,000 to 6,000 years ago – on the coast of Ly Son Island, 30km off Quang Ngai Province mainland. Tranquil: An Binh Islet of Ly Son Island, off the coast of Quang Ngai, is said to be an ideal site for eco-tourism. The coral reef complex, which was named Coi Xay (a manual rice mill seen in rural areas in the old days) coral, includes a heap of coral blocks scattered on the beach. We haven’t found such a coral reef complex in Vietnam before. Nam said the discovery was part of initial research to recognise Ly Son Island as a global geo-park.