Moraine State Park, Muddy Creek Township, will host an advanced paddling workshop from 9 a.m. to noon Saturday. A full moon paddle is planned for 7:30 to 10 p.m. Aug. 29. Reservations are required; call 724 368-8811. On Sunday, a program on “Venomous Snakes of Pa.” is planned for 2 to 3:30 p.m. at the Moraine Outdoor Center on the North Shore.

Nautical Nature, a 37-passenger enclosed pontoon boat at Moraine State Park, has trips on Lake Arthur. Cost is $35 for two people, $60 for a family of four. Reservations are required. Call 724-368-9185 or visit www.morainepreservationfund.org.

Jennings Environmental Education Center, Route 528, Brady Township, hosts “Honey Heroes” at 2 p.m. Sept. 20; no registration is required. “Wild Spirit” live animal program presented by TASOW and Skye's Spirit Wildlife Rehabilitation Center will take place at 2 p.m. Aug. 29. “An Introduction to Archery” will be from 1 to 3 p.m. Sept. 13; registration is required. National Public Lands Day, a volunteer event, will be from 9 a.m. to 1 p.m. Sept. 26, and registration is required. Also Scout Stewards: National Public Lands Day for Scouts is planned for Sept. 27; registration is necessary. Call 724-794-6011.

Succop Nature Park, 185 W. Airport Road, Penn Township, has trails open from dawn to dusk. Visit www.aswp.org.

Star parties sponsored by the Amateur Astronomers Association of Pittsburgh are scheduled to begin, weather permitting, at about 8:10 p.m. Friday and Saturday at the Nicholas E. Wagman Observatory in Deer Lakes Regional Park near Russellton. Call 724-224-2510.McConnells Mill State Park, Slippery Rock Township, Lawrence County, off Route 422, has the gristmill open through September from 11 a.m. to 4 p.m. Wednesdays through Sundays. Interpretive tours are available at 1 and 3 p.m. Tours for groups may be scheduled by calling the Moraine State Park office, 724 368-8811.