Moving on through sparsely-populated taiga , the LOCATION@1 swells with numerous tributaries and finally reaches the LOCATION@2 in desolate tundra where it is icebound for more than half the year .

Moving on through sparsely-populated taiga , the LOCATION@1 grows with many tributaries and finally reaches the LOCATION@2 in desolate tundra where it is covered with ice for more than half the year .
