Frozen Apparitions: Quest for the Perfect Ice Climb, a presentation by Rob Cordery-Cotter at Mountain Chalet, 226 N. Tejon St. Free, 633-0732. Thurs., April 18, 8 p.m.
Public Hikes at the Catamount Institute in Woodland Park. On the first Saturday of each month from 9 a.m. to noon. Bring water and wear appropriate clothing. $3-$6. Pre-registration required, 687-1993. Next hike: May 4.