Join Sinks Canyon State Park on a guided adventure in the Boulder Choke Cave. Participants will be equipped with helmets, lights and overalls. $20. Reservations required at bookeo.com/sinkscanyonstatepark.

Ladies, join Ranger Katie for a snowshoe trek (or hike, depending on the weather) to the old water tower. Expect a trek of about 1.5 miles roundtrip with some elevation gain. Dress warm. Registration required for all participants at wyoparks.info/womensshowshoe. Day-Use Fees are waived for this park program. For directions, visit wyoparks.info/boysenmaps.