Pennington County SD Tunnels


 Additions and/or corrections to the database are encouraged! Simple Add/Edit Procedure.

Displaying 1 to 5 of 5 records
Name USGS Topo Map
C.C. Gideon Tunnel Iron Mountain
Doane Robinson Tunnel Iron Mountain
MinerΓÇÖs Gateway Tunnel Mount Rushmore
Scovel Johnson Tunnel Iron Mountain
Thunderhead Falls Tunnel Pactola Dam
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