However, both John Rees and Vardis Fisher believed it is named for the Snake River Canyon which forms a natural boundary for the county.
(the Snake River Canyon; forms; a natural boundary for the county) (both John Rees and Vardis Fisher; believed; it is named for the Snake River Canyon) Context(both John Rees and Vardis Fisher believed,List([9, 50))):(it; is named; for the Snake River Canyon)
both John Rees and Vardis Fisher believed,List([9, 50))
the Snake River Canyon both John Rees and Vardis Fisher it
forms believed is named
a natural boundary for the county
it is named for the Snake River Canyon
for the Snake River Canyon