Rising in LOCATION@1 , it follows a northerly course to the LOCATION@2 in the LOCATION@3 , draining a large part of central LOCATION@4 , the longest stream following the Yenisei-Angara-Selenga-Ider .

The river drains a large part of central LOCATION@4 , the longest stream following the Yenisei-Angara-Selenga-Ider is about NUMBER@1 km long .
