The Air raid shelter 2 is located next to the industrial area on the road to Sant Sebastià, within the municipality of Vall d’en Bas, west of the municipality of Les Preses, in the region of La Garrotxa.
This air raid shelter 2 was part of the Olot airfield, and its function was to protect all the military working on the airfield in case of an air attack.
The construction of this air raid shelter is simple but effective. The air raid shelter 2 has a single angled entrance, and a slightly buried corridor with an opening at the end. This shelter would not withstand a direct aerial bombardment, but it would withstand shrapnel.