9,665 ft / 2,946 m
date unknown
10,295 ft / 3,138 m
9,219 ft / 2,810 m
8,215 ft / 2,504 m
15,489 ft / 4,721 m
3,848 ft / 1,173 m
9,317 ft / 2,840 m
8,842 ft / 2,695 m
12,644 ft / 3,854 m
15,633 ft / 4,765 m
