The international competition launched in 2015 by International Tunnelling and Underground Association (ITA) returns in 2020 for a promising 6th edition. Since 5 years, the event is hosted by different Member Nations, part of the association (Switzerland, Singapore, France, China, USA) the 5 previous editions of the event gathered more than 1200 attendees and 403 entries. In 2020, for the first time the event has been moved to an online edition, due to Covid19 restrictions and health issues. It will take place online on December 3rd and 4th and the presentations and virtual exhibition will remain available during several weeks.