The following figures reveal possible locations Iran investigated as potential nuclear test sites prior to 2004. Figure 1 shows a map with the marked test sites, which was overlaid on Google Earth (figure 2). This revealed the following locations and coordinates (see figure 3):

TEST SITE #1: 30 09 58.11 N, 59 16 42.37 E

TEST SITE #2: 31 11 14.42 N, 57 45 41.06 E

TEST SITE #3: 31 21 27.00 N, 57 35 42.63 E

TEST SITE #4: 34 24 30.24 N, 53 17 41.45 E

TEST SITE #5: 35 05 39.80 N, 55 22 17.67 E

Figures 4 and 5 provide close-ups of the sites.

Images