Devana Chasma is an weak extensional rift zone on Venus, with a length of 4000 km, a width of 150 250 km, and a depth reaching 5 km. Most of the faults are facing north-south. The rift is located in Regio. A 3000 km rise is due volcanic activity. (wikipedia entry)
A chasma is a deep, elongated, steep-sided depression. On Venus they are named after goddesses of hunt; moon goddesses.
Image Source. Marker locations are approximate and may not always appear to align with image on map.