Fig. 2
From: Detection of cavities in a salt mine with cosmic muons: expected results and first data

(a) Galleries 2D view from map; (b) 3D view with location of the muon detector placement point (-106 gallery) and the mine entry.
From: Detection of cavities in a salt mine with cosmic muons: expected results and first data

(a) Galleries 2D view from map; (b) 3D view with location of the muon detector placement point (-106 gallery) and the mine entry.