About 20 years ago, I designed a system of trails, observation decks, steps, and boardwalks for a 136-acre nature preserve in Cary, North Carolina. It was an absolute delight to work on this project, because Hemlock Bluffs is such a magical place – a natural oasis within an area of suburban development. It features a series of tall north-facing bluffs that shelter a community of Eastern Hemlocks. This is unusual because these trees typically do not grow naturally in the piedmont region of North Carolina – this species is much more common in the cooler Appalachian Mountains more than 200 miles to the west. In addition, the preserve includes an extensive upland forest and a wooded floodplain area with vernal pools and a rich variety of plants.