via South China Morning Post, 01 March 2018:
Australian-born history buff Robert Lockyer leads tours of tunnels dug into Lamma Island by villagers the Japanese executed afterwards to keep their location secret; his explorations have also uncovered a Qing dynasty fort
Source: Hong Kong history: the tunnels where Japanese hid from air raids in wartime – exploring one of the last vestiges of 4-year occupation
Officials from the Lam Dong Provincial Museum report the discovery of a secret passage in a villa belonging to the last queen of Vietnam.
Queen Nam Phuong's Villa, Tuoi Tre News 20111125
Hidden tunnel discovered in the last Queenâ€™s house
Tuoi Tre News, 25 November 2011
Tunnel workers working under Plaza Independencia in Cebu City will undergo heritage training to recognise and preserve pre-hispanic artefacts they might come across while digging. The move by the National Museum is to help prevent further looting from the site.
Heritage training for tunnel workers
Cebu Daily News, 28 September 2008