Jennings Environmental Education Center will host a winter mountain adventure Friday through Sunday. Call 724-794-6011 for details on the trip to Laurel Ridge, Ohiopyle State Park and Seven Springs Resort for assorted activities. Jennings is regularly open from 8 a.m. to 4 p.m. weekdays and on weekends as scheduled. The trails are open daily from sunrise to sunset.Jennings is open from 8 a.m. to 4 p.m. weekdays and on weekends as scheduled. The trails are open daily from sunrise to sunset. Call 724-794-6011 to confirm programs.

<B>McKeever Environmental Learning Center</B>, 55 McKeever Lane, Sandy Lake, will be the site of "Forest Dendrology Workshop (Winter Tree ID)" featuring indoor and outdoor instruction from 8 a.m. to 3 p.m. Friday. Cost is $25 for materials and lunch. Call 724-376-1000 or visit www.mckeever.org.