YOSEMITE — Rockfall activity in 2016 was slightly lower than in previous years, with 58 documented events (rockfalls and rockslides) and a cumulative volume of about 5,000 cubic meters (roughly 15,000 tons). Nevertheless, many of these rockfalls were consequential, impacting park infrastructure and affecting park visitors, employees, and residents. The year got off to a quick start with a rockfall ...

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