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About is an invitation-only networking site for the tunnel & underground professionals. Among the members of the community are some of the most influential subject professionals in the world. aims to facilitate the professional networking and stimulate the professional solidarity by sharing information. As a platform, it is a prime source for the wide-ranging tunnelling related information contributed  by professionals from all corners of the world.

Often tunelling news are posted on before they appear on professional news sites. In some cases, news from non-English sources appear in English language only at The range of posts on the platform varies from tunneling news, jobs, technological developments to relevant social subjects.

Among the major platforms and publications specific to its subject area, is the only networking platform as well as being the only one with user-generated content.  As a member, you can post about any relevant subject, including over your company's products & services and invite your colleagues to our community. If you are not a member yet, you can ask for an invitation with the right credentials- please check the home page.

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For advertising possibilities available, please send an e-mail to accepts advertisements only for underground space and tunnelling related products & services.


Media Partnerships

Note: We have removed the mention of World Tunnel Congress 2022 (WTC2022) in Copenhagen from our media partner list. We will be releasing a public note over this matter. is a Media Partner for the following events.

Tunnel & Metro Fire Protection Webinar Series 22-26 March, 2021
Fire Protection Systems In Tunnels: Issues And Directions

Tunnel & Metro Fire Protection Webinar Series 22-26 March, 2021

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Fire in road and rail tunnels spreads very rapidly due to radiation. Charged particles are reflected from the internal surfaces of the tunnel, making it act like a clay oven. Hot gasses accumulating in the tunnel can lead to a flashover. Improper use of ventilation in an emergency can lead to "ventilated oven conditions", increasing the convection effect and allowing the fire to gain intensity and spread inside the tunnel. A fire in a tunnel should therefore be controlled in its early stages, in order to limit its spread.

Not all tunnels are provided with service tunnels connected to the main tunnel, and sometimes the driving distance for emergency vehicles can be relatively long. The electrification system to trains inside the tunnel needs to be de-energized by the people with the proper jurisdiction, authority and knowledge before manual fire fighting can be organised. Interventions may also be delayed by the difficulty involved in identifying the fire area due to heavy toxic fumes, extremely high temperatures, obstructions, derailments or unknown hazardous materials. Considering the above, property damages resulting from a fire in a tunnel can be very significant, including both tunnel structure, vehicles and track.


WTC2020 ITA-AITES World Tunnel Congress World Tunnel Congress Media Partner

cover image credit: By Matt Brown from London, England - Crossrail tunnel looking west, CC BY 2.0,]