We went to explore Iru bridge side of Peter the Great's Naval Fortress. The mouth of the tunnel, that is filled with water, is perfectly visible. In front of the mouth begins a canyon and goes almost to the Pirita river.
Aare on peidetud kanjoni järsakule, kuhu saab läheneda nii ülevalt, kui ka alt. Ettevaatus vajalik! Järsak on libe.
The cache is hidden to the steep of canyon and you can approach from top and bottom. Be careful! Steep is slippery!