The Blackstairs form an integral part of Ireland’s heritage. Its natural cover harboured many rebels during the 1798 Rebellion, the bloodiest conflict in Ireland’s modern Irish history. The highest peak is Mount Leinster (795m), dominating the surrounding skyline. The Blackstairs mountain is the second highest peak. A metal cross 30m to the east of the summit marks the spot of two fatal aeroplane crashes – a German bomber in 1941 and a Cessna 182 in 1983.