London Underground work has caused Kennington to sink by 1 cm in a year — Quartz

London Underground work has caused Kennington to sink by 1 cm in a year — Quartz
... When a European weather satellite took images of a region in south London, it made a surprising discovery: The neighborhood of Kennington has sunk about 1 cm in the past year. ... The company says the most likely reason for Kennington’s subsidence is the sinking of shaft—the digging of a vertical tunnel—that was completed in November, as part of an extension of the Northern line on the London Underground. The subsidence occurs as the ground around a freshly dug tunnel settles into its new position. ...