Question: Which Glacier is named after Philemon Beecher Van Trump, who was the first to ascend Mount Rainer in 1870?
Sentence (from "Van Trump Glacier"): Named after P. B. Van Trump, who was part of an early ascent of Mount Rainier, the glacier covers 0.2 sqmi and contains 500 million ft (14 million m) of ice.
Relevant evidence: Yes