https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/3296700![An empty staircase and two escalators in a tunnel in London. Original public domain image from Wikimedia Commons](https://images.rawpixel.com/image_social_square/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvdXB3azYyMjA5NDU1LXdpa2ltZWRpYS1pbWFnZS1rb3duYTg5dC5qcGc.jpg)
![An empty staircase and two escalators in a tunnel in London. Original public domain image from Wikimedia Commons](https://images.rawpixel.com/image_social_square/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvdXB3azYyMjA5NDU1LXdpa2ltZWRpYS1pbWFnZS1rb3duYTg5dC5qcGc.jpg)
An empty staircase and two escalators in a tunnel in London. Original public domain image from Wikimedia Commons
An empty staircase and two escalators in a tunnel in London. Original public domain image from Wikimedia Commons
Public DomainFree CC0 image for Personal and Business use