Walk from the Trail Head parking lot at the Monocacy Natural Resource Management Area to the Johnson Quarry. The stone from this quarry was used to build the Monocacy Aqueduct. Roundtrip, 4 miles.

You must register in advance for this hike. Capacity is limited. Please contact Jon Wolz (240-888-5367 or hikemaster@candocanal.org) to register or get more information.