Moraine State Park will be the site of an Evening Kayak Tour beginning at 7 p.m. Saturday. This trip is designed for intermediate paddlers; meet the park naturalist at the Old 422 launch area off old Route 422/Park Road. Explore Lake Arthur is set for 1 p.m. Sunday; meet the park naturalist at the Pleasant Valley launch on the South Shore. To reserve a park kayak, call the Moraine office at 724-368-8811.

Venture Outdoors North will host a Doggie Day Trek on Saturday. Visit the website www.ventureoutdoors.org.

<B>McConnells Mill State Park</B> in Slippery Rock Township, just outside the county line in Lawrence County, will be the site of Anxious for Autumn Hike at 1 p.m. Saturday. Join the park naturalist for a guided hike in Slippery Rock Gorge; meet at the courtyard of the historic gristmill. A program called "The Big Trees" is planned for 2 p.m. Sunday; meet at the parking lot above Breakneck & Eckert bridges for a hike. The 18th annual Heritage Festival will take place from 10 a.m. to 6 p.m. Sept. 25 and 11 a.m. to 6 p.m. Sept. 26. Admission and parking are free. Call 724-368-8811 to confirm programs.