October 2, 2018 The Silver Shingle Signage QR code signs installed at Metcalfe Geoheritage Park October 2, 2018 The Silver Shingle Signage The Metcalfe Geoheritage Park, Canada’s new and first Geoheritage park, is located in Almonte, Ontario. The Silver Shingle was contracted to develop signage with QR codes for visitors to learn more information on the specimen samples on display.