See also the clench The Slack Gathering
The fourth annual Gathering at the Grove was planned for June 12 - 14, 2020, and was named The Slack Gathering (which is also the name of a clench). It was planned to honor the 100th anniversary of Women's Suffrage in America and the 50th anniversary of Earth Day.
Due to the national health crisis in America, the 2020 event was cancelled. Or it was cancelled because the organizers slacked off.