Hon Nua Island (Phu Yen) – Source: https://52hz.vn/
Deo Ca-Hon Nua is named in Decision 194/CT dated August 9, 1986 of the Chairman of the Council of Ministers, which decided to establish a historical cultural area with an area of 10,000 hectares named Deo Ca-Hon Ron (Ministry of Agriculture and Rural Development, 1997).