the Curragh military hospital where several received surgery. Three men were fully blinded in the accident, two more partially. One survivor later murdered two men in Dublin in 1947 but was found "guilty but insane". A memorial to the disaster was raised near Seskin Bridge in 1986. 1977 incident In May 1977, five Irish soldiers were killed and three were injured when a mortar detonated unexpectedly during a training exercise. 1979 incident On 15 April 1979, a fatal accident occurred in the Glen when a group of teenagers engaging in an orienteering activity triggered an explosive which subsequently detonated, killing three and seriously injuring others. The group originated from Lucan. The resultant inquiry found that the explosive was an unexploded shell which had been left in the region by the military during one of their exercises. Bobby Molloy, the Minister for Defence, issued a statement in the chamber expressing his "personal regret" about the incident, and encouraged members of the public to avoid replicating the "tragic occurrences" by avoiding the area entirely to not encounter the shells. The deceased were buried in Esker Cemetery, and are commemorated annually at mass services in Lucan. Firing range The Glen of Imaal firing range is used throughout the year by the Irish Army as a training area. It is the only range in the country capable of accommodating field artillery such as the 105mm Light Gun. The range area is also used for firing anti-tank weapons, mortars and heavy machine guns, as well as the vehicle mounted weapons of the Cavalry Corps. Military training in the area is not limited to the firing of heavy weapons. Tactical exercises also take place there, sometimes involving MOWAG Armoured Personnel Carriers and Irish Air Corps helicopters. Exercises in peacekeeping operations are also undertaken in the Glen. Care is advised while driving on local roads due to the presence of heavy military traffic, and there have been some questions on the impacts of military exercises on residents and the safety of other road users in the area. Units using the Glen area are sometimes billeted in the nearby Coolmoney Camp. The Glen of Imaal is accessible to the Curragh Camp in County Kildare by the Dunlavin-Old Killcullen Road. Mountain climbing The highest mountain in Wicklow and one of the highest mountains in Ireland, Lugnaquilla, is on the southeastern end of the Glen. Fenton's Pub is one of