I never heard the term “ledge” used as a synonym for bedrock before I moved to Vermont. But I once heard a guy in Maryland confirm it was bedrock by saying “Yeah, I think that’s a piece of the state.”
Here is a Google Earth KML file of two ledgey places I visited this week. One was made of Monkton quartzite with some dolomite strata and a rich, unusual plant community, and I accompanied some experts who identified three state endangered species. The other was made of Cheshire quartzite with somewhat less calcium available, and I recently found a lovely grove of pitch and red pines there. A new gigapan of that Pitch Pine-Oak-Heath-Rocky Summit community is included in the KML file.
You can see photos, GPS tracks, and the gigapan by downloading the KML file into Google Earth, or by clicking the link (below the break) to open it in a new browser window, or just use the embedded window at the bottom of the post (Your computer must have the Google Earth browser plugin installed).
Click here to open the KML file in a new browser tab. (Note: If you enter a gigapan, the “Exit Photo” button is partly hidden under the “Terrain” button. Click the exposed edge of it to exit the gigapan.)
Testing different embeds here: