The Dari Ovoo (Mongolian: ÃÂðÃÂàþòþþ), also known as Altan Ovoo (Mongolian: ÃÂûÃÂðý þòþþ, lit. "golden+ovoo"), is an extinct volcano in the Dariganga district, Sukhbaatar Province in eastern Mongolia. It has an elevation of . The mountain is a regional sacred mountain in Mongolia.