There is a network of air raid precaution (ARP) tunnels under Mount Parish, which was built by the Government some time before the Battle of Hong Kong in 1941. Like the other 28 ARP tunnels in Hong Kong, the purpose was to provide protection for citizens from air raids by the Japanese Air Force. The total length of the tunnels is 1.8 km, with two ventilation shafts and 13 portals numbered from 71 to 83, along the slope beside Stubbs Road, Queen's Road East and Kennedy Road. Most of the portals were filled in after the war, leaving only three portals which are currently accessible by related government staff, those with numbers 72, 80 and 81. Surveys made in the late 1970s and early 1980s revealed that the tunnels are divided into three levels, with connecting slopes between them.