Bill Mertens:
Dying Hemlock
Bill Mertens:
Elk Trail - Fall
Bill Mertens:
Reflections
Bill Mertens:
Cypripedium acaule L.
Bill Mertens:
Cypripedium acaule L.
Bill Mertens:
Sulfur Shelf Mushroom
Bill Mertens:
Rt 80 from the Peale Viaduct
Bill Mertens:
Rt 80 from Red Moshannon
Bill Mertens:
Big Wet Rock
Bill Mertens:
Peale Viaduct Bridge from below
Bill Mertens:
Tussey Ridge Fire Zone
Bill Mertens:
Tussey Ridge Fire Zone
Bill Mertens:
Red pine plantation with ferns
Bill Mertens:
A Beaver Pond in Scotia Barrens
Bill Mertens:
Beaver Run Shallow Water Impoundment
Bill Mertens:
Beaver Run Shallow Water Impoundment
Bill Mertens:
Mosquito Creek
Bill Mertens:
Owl Run
Bill Mertens:
Owl Run
Bill Mertens:
Quehanna
Bill Mertens:
Mosquito Creek
Bill Mertens:
The Haystacks
Bill Mertens:
The Haystacks
Bill Mertens:
Black Forest
Bill Mertens:
Black Forest
Bill Mertens:
Heading toward trailhead on Bonnell Run
Bill Mertens:
Raven's Horn
Bill Mertens:
Snow Support
Bill Mertens:
Pine Creek from GET