Would you consider a boardwalk? They're quite common in parks here in SoFL, where it's often humid (if not pouring rain) and the sun is very strong. Instead of wood, you might consider using an amalgam of recycled plastic and wood. (Sorry though, don't know a resource for this material.) Wood is high-maintenance in this environment and needs to be treated every year or two with chlorine and strong preservatives. Rhea Tannenbaum [log in to unmask] http://pages.prodigy.net/rheat1/natur001.htm A unique signage system for living animal exhibits in nature centers, zoos and aquariums. Modular, water-resistant, scratch-resistant, easy to mount and remove.