Excavation for the Hyper-Kamiokande access tunnel has begun

The access tunnel excavation for the Hyper-Kamiokande project begun on the 6th May. Following the completion of the entrance yard construction, the excavation work started in earnest. An approximately 2km long tunnel will be rapidly excavated in 9 months followed by the excavation of approach tunnels and the main cavern.

With preparations going smoothly, the construction process of Hyper-Kamiokande is accelerating, towards the start of the experiment in 2027.