The Tarantula Mine can only be seen when Lake Don Pedro is at extremely low levels as it was when we visited in November 2014. Part of the Eagle-Shawmut operation, very little history is available on the web. A 1915 mining report stated that the mine operated a 100 HP hoist, 10 drill compressor driven by a 100 HP motor and a 20 stamp mill operated by a 75 HP motor. A sizable operation.
All that was visible from across the lake was the mill foundation and several tailings piles. Comment below if you know more!