The tunnels lie directly below London Underground’s Central Line in the city’s Holborn area. Work to dig them began in secret ...

Here and there are graffiti tags and a few items left by urban explorers who snuck in over the years, ... London Tunnels aims to open in 2028, and to attract up to 4.2 million tourists a year.

Here and there are graffiti tags and a few items left by urban explorers who snuck in over the years, ... London Tunnels aims to open in 2028, and to attract up to 4.2 million tourists a year.

Here and there are graffiti tags and a few items left by urban explorers who snuck in over the years, ... London Tunnels aims to open in 2028, and to attract up to 4.2 million tourists a year.

Here and there are graffiti tags and a few items left by urban explorers who snuck in over the years, ... London Tunnels aims to open in 2028, and to attract up to 4.2 million tourists a year.

Here and there are graffiti tags and a few items left by urban explorers who snuck in over the years, ... London Tunnels aims to open in 2028, and to attract up to 4.2 million tourists a year.

Here and there are graffiti tags and a few items left by urban explorers who snuck in over the years, ... London Tunnels aims to open in 2028, and to attract up to 4.2 million tourists a year.

Here and there are graffiti tags and a few items left by urban explorers who snuck in over the years, ... London Tunnels aims to open in 2028, and to attract up to 4.2 million tourists a year.