Question: What Virginian explorer passed through an area near the Clinch River?
Sentence (from "Thomas Walker (explorer)"): Thomas Walker (January 25, 1715 – November 9, 1794) was a distinguished physician and explorer from Virginia; in the mid-18th century, he was part of an expedition to the region beyond the Allegheny Mountains and the unsettled area of British North America.
Relevant evidence: Yes