Building Stones of Newfoundland and Labrador app contains a walking tour that highlights building construction, building stones, and sources.
The app currently contains a tour with 10 stops. Each stop is described, and associated images of the location. Additional tours will be added.
Download the tour before heading out so you do not need worry about accessing mobile data. The tour includes a map showing the location of the 10 stops.
For more information about the geology of Newfoundland and Labrador visit the Geological Survey at:
http://www.nr.gov.nl.ca/nr/mines/Geoscience