 Also out on Mace Headland 10 minutes from Carna, close to where the Spanish Armada ship went aground, there are the remains of an army bunker used by the Irish Defence Forces during The Emergency (WWII) to spot ships off the Irish coast.In September 2004 the St.Oliver, a fishing vessel, set sail for Ros an Mhíl.The ship was being repaired at the local shipyard in Letterard.