Access to Groaning Cave, Colorado’s longest cave, is managed by the Colorado Cave Survey for the White river National Forest. A short summary has been prepared of caver visitation to Groaning Cave during the years 2017 and 2018, based on the log entries in the cave register filled out by every caver group. There were 31 trips registered in 2017 and 38 trips in 2018. There were a total of 112 cavers on all trips in 2017, and 135 cavers in 2018.