Environmental Graffiti has a gallery of images from an underground crypt in Belgium. It was used for burials for decades, but maintenance was discontinued because of the expense. After years of decay, access to the crypt was closed for safety reasons. But you can see it still. Photographer and urban explorer Sven Fennema takes you on an underground tour with fascinating pictures from his book Anderswelten (Other Worlds).
"The air was very cold and wet, and you could see your every breath – also an experience I will never forget. It was as if death was close beside you somehow. The crypt was full of those strange plastic flowers – still with their bright colors – but it was also full of spiders' webs and other kinds of decay.”
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(Image credit: Sven Fennema)