https://www.cooperscivils.co.uk/products/twin-wall/road-gullies/
450mm Diameter x 900mm high (also 750mm high) plastic road gully. Ideal for use with 150mm Twinwall or 160mm Sewer Pipe. * 160mm / 178mm Outlet * Trapped to...
roadgulliescooperdrainage
https://www.space.com/13855-martian-polar-gullies-mystery-carbon-dioxide.html
Liquid water may not have formed the gullies on Mars. Instead, carbon dioxide jumping from ice to gas could have moved sand and dust enough to carve the...
mysterymarsgulliessolvedspace
https://www.nasa.gov/image-article/colorful-equatorial-gullies-krupac-crater/
Although large gullies (ravines) are concentrated at higher latitudes, there are gullies on steep slopes in equatorial regions, as seen in this image captured...
colorfulequatorialgullieskrupaccrater