NATIONAL PARK SERVICE · news
Sculpture Preservation Continues with Annual Rock Block Monitor Calibration September 11 - 13
September 5, 2023 · Source: National Park Service
KEYSTONE, SD –– Beginning September 12, visitors may witness climbers repelling and ascending across the sculpture. This is due to an annual re-calibration of specialized equipment that monitors changes in the rock to anticipate damages due to environmental shifts in temperature and erosion. This information has been collected since 1996 through a contract with RESPEC Engineering out of Rapid City, South Dakota. With a three-dimensional map and continual monitoring, park staff can quickly identify any changes in the sculpture and implement any needed remediations.
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Traveler guidance by State & Nation Staff Writer.