Explore the ancient and modern environments of the Otto and Magdalene Ackermann Nature Preserve on this (almost) Earth Day walk with the Westmoreland Land Trust and Turtle Creek Watershed Association.  We will explore a hilltop sandstone quarry as well as a modern floodplain.  The walk will be on steep unimproved trails, so wear sturdy hiking shoes and dress for the weather.  Sun screen and insect repellent are strongly recommended.