UK Victorian Reservoir

It was a cold winters day that me and my fellow explorers Emerson, Adam. Laurie and Liam stepped away from the hustle and bustle of the busy London streets and made our way underground. We disappeared into a tiny hole that would take us down a rabbit hole into a gigantic underground reservoir, 99.9% of people would never know it existed, it was fenced off and decommissioned by the water board because of a inspection that showed the roof of the reservoir was cracking and could lead to its collapse.