Montagne Souterraine unites two defining features of Montréal, the underground city and Mont Royal. By taking multiple walks on Mont Royal while carrying a GPS, I used my body to record the mountain's topography. The data from these walks was translated by software into a 3D form and made into a sculpture constructed of 1/8" cold rolled steel bar and cork balls. This project was exhibited in Montréal's Complexe Guy-Favreau during the 2011 edition of Art Souterrain.