There is an ancient city ruin with over 50 building remains Olon Baishin southeast from Kheseg Baishin behind Busyn Chuluu and in front of Olongyn Us in Ikh Khet Soum, Dornogobi Aimag.

There are many construction remains surrounding north and 2 adjacent sides of pyramid-shaped building which is supposed to be a main building. Although appearance and shape of some buildings are much same as that of the buildings in Kheseg Baishin, they differ with the fortress surrounding.

According to the researchers’ records, a base of the building was made of granite and brick wall on it was placed using a same style as that of the buildings in Kheseg Baishin. Square-shaped stone with a hole in the centre found from the ruin is supposed to be a support of the column. There were no traces of stele among the finds, but a stone trough and stupa-shaped establishments were found. Both Kheseg Baishin and Olon Baishin are supposed to have been built by Togoontumur khan. Russian tourist Timkovskii who travelled the sight in 1821-22 recorded that “Sain Huntaij had been living there 300 years ago”. Sinologist Palladi Kafarova who passed through this area in 1847 heard of talk: “groom of Manchu king had been living in this place”.

As seen from here both Kheseg Baishin and Olon Baishin belong to same period of time and Sain Huntaij must be Erdene Huntaij Degelei mentioned in the inscription of Kheseg Baishin. Probably, he had inhabited in the land until it was conquered and destroyed by the Manchu in the end of 17th century. Even though there is still a talk among the locals of Togoontumur khan in connection with the place. After his return from China, may be, Togoontumur khan had lived for several years in this place and then some buildings were probably built after it was abandoned.