Assertion: winthrop glacier | /r/CapableOf | merge with several small glaciers
Facets:
value: north of the mountain
type: LOCATION
value: from tributary valleys
type: LOCATION
Source sentences:
text: During the Evans Creek glaciation of the Pleistocene epoch (22-15 thousand years ago), Winthrop Glacier extended 14 miles (22 km) north of the summit, where it merged with several small glaciers from tributary valleys north of the mountain.