As executive director of the group from 1969 to 1985, he aligned its disparate local chapters and offices into a powerful lobby in Washington. He was 92.
Michael McCloskey in an undated photo. By the time he retired from the Sierra Club, it was regarded as a titan of grass-roots environmental activism nationally.
The oddly shaped 15-foot-tall pillar collapsed after a torrent of rain. It was the second loss of a striking rock formation in the region in less than a month.
Connexion
