Source Wikipedia
Si Somdet is a district (amphoe) of Roi Et Province, Thailand.
Its main attraction is Wat Pa Kung.
Neighboring districts are (from the north clockwise) Mueang Roi Et and Chaturaphak Phiman of Roi Et Province, Wapi Pathum, Kae Dam and Mueang Maha Sarakham of Maha Sarakham Province.
The district was created on 1 April 1987, when the five tambon Pho Thong, Si Somdet, Mueang Plueai, Nong Yai and Suan Chik were split off from Mueang Roi Et District. It was upgraded to a full district on 4 July 1994.
The district is divided into eight sub-districts (tambon), which are further subdivided into 82 villages (muban). There are no municipal (thesaban) areas, and eight tambon administrative organizations (TAO).