moved bldg on the surface to underground like Hamas
if Hamas can build 500km underground tunnels, definitely, we can build even longer w modern machines at peaceful time.
"This network of tunnels is colloquially referred to as the Gaza metro. According to General Hassan Hassanzadeh, the commander of the Islamic Revolutionary Guard Corps (IRGC) forces in Tehran, there are more than 500 kilometers of tunnels."
How did hamas build underground tunnels ?
"Hamas used electric or pneumatic jackhammers for digging tunnels. Tunnels were dug 18–25 meters (60–82 feet) underground at the rate of 4–5 meters a day. Tunnels were usually dug through sandy soil requiring their roof to be supported by a more durable level of clay."
how big is the Gaza Strip ? 365 km²
how big is singapore ? 734.3 km²
we r double size of Gaza Strip, so technically, we can do 1000 km of tunnels wo problem.
Inside Vietnam Củ Chi underground tunnels built in 1940s, 50s,