Amersham, Buckinghamshire, UK. 23rd April, 2026. A sign for the compound at the newly constructed HS2 High Speed Rail Amersham Ventilation Shaft in Amersham, Buckinghamshire above the HS2 Chiltern Tunnels that will eventually take passengers from London to Birmingham. HS2 say "The function of the ventilation shaft and compound is to provide ventilation to control the tunnel environment, space for mechanical and electrical equipment to support the operation of the railway and an access point for emergency services". The HS2 High Speed Rail 2 project is running years behind schedule and is vastl

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