As urbanization progresses, Chinese cities are experiencing rapid growth in terms of the development and utilization of underground...

The storage tanks in Arroyofresno and Butarque are capable of holding an astonishing capacity of 400,000 m³ of water and are some of the largest in the...

It is one of the very few cases in the world of underground crops and the first owned by a Municipality. In fact, the investment was made entirely by the Municipality of Torrita di...

CNN gives Singapore as exemplary nation for using underground space. https://edition.cnn.com/2022/12/21/world/underground-development-singapore-dtss-tnf-spc-intl/index.html

I think this article includes has loads of intelligence work: https://isis-online.org/isis-reports/detail/irans-natanz-tunnel-complex-deeper-larger-than-expected

Please: Underground Space Use. Analysis of the Past and Lessons for the Future, Two Volume Set The 200 papers in this two-volume set are a selection of work by tunnel experts from Europe, Asia, and the USA, and also showcase the work of the...

A disused Victorian rail tunnel in Wales gets green light to become Europe’s longest underground cycle lane. The tunnel was abandoned for for more than 50 years...

Famous Polish architect and designer Przemysław “Mac” Stopa (Massive Design) designs the underground station and underground space. In the west of...

When the 220 metre long tunnel is completed, it will greatly facilitate access to station platforms and cycling around the station.  The "Kaisatunneli" will be 8 meters wide and 3 meters high. The width of the bike lane is 4 meters...

Seok-won Lee, chairman of the Korean Tunneling and Underground Space Association say “it is regrettable that tunnels and underground space are depicted mostly as darkness, hardship, adversity". Tunnel experts in Korea believe this...

  Into the rock on the side of a mountain directly under the Har HaMenuchot cemetery here lies the entrance to Jerusalem’s newest burial place. It is for 23000 bodies. Expected to be full in a...

http://www.ecns.cn/news/cns-wire/2019-09-03/detail-ifznpqie3828083.shtml

  Space-poor Singapore has expanded outwards by building into the sea and upwards by constructing high-rises but planners are now looking underground as they seek new areas for...

  Elon Musk wants to drill holes in China. The Tesla founder has tweeted to reveal that his tunnelling and transportation startup, The Boring Company, will be launch in China later this...

DARPA’s Tactical Technology Office is looking for urban, privately managed tunnels, suitable for post-global catastrophe situations. The goal is to find out how “the underground domain” affects humanity, as the request for...

  The European Space Agency has proposed that it’s possible to build bases in gigantic tunnels buried beneath   the moon’s surface. It’s issued an open call for ideas on how to ‘design a system to detect,...