Science & Tech
6
On Nov. 11, 1935, Explorer II, released in Black Hills and bearing Captains Orville A. Anderson and Albert W. Stevens, landed here after a record ascent to 72,395 feet, with instruments intact and with a wealth of new scientific knowledge.
Hear stories like this as you drive
ExploreHere reads historical markers out loud as you pass them: over 325,000 stories across the US. No account needed.
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Cedar Grove Colony, South Dakota · United States
