|Gale Blackmer and two participants identifying rocks.|
|Metamorphic rocks made of quartz, feldspar, and granite.|
|Credit: Center for Educational Technologies and the COTF/Classroom for the Future.|

|Gale Blackmer and two participants identifying rocks.|
|Metamorphic rocks made of quartz, feldspar, and granite.|
|Credit: Center for Educational Technologies and the COTF/Classroom for the Future.|
Along Chandler Mill Road we visited a large outcrop, which is a patch of exposed bedrock that allows geologist to study the history of the land.
|Participant inspecting the outcrop.|
|Full view of outcrop.|
For more information visit the PA DCNR Geological Survey website: http://www.dcnr.state.pa.us/topogeo/