The northwest quadrant and, more specifically, the northern parts of Oceanus Procellarum are characterized with an area rich and diverse in morphology. Immediately to the north of the twin craters Aristarchus and Herodotus, one will find the largest rille on the lunar surface (Vallis Schroeteri) measuring 160 km in length, up to 11 km in width and 1 km in depth whose southern end is the "Cobra Head" region just to the north of the aforementioned twin craters whereas its northern end traverses through the Aristarchus Plateau, an elevated region 2 km in height whose origin is unknown. The vast concentration of lunar sinuous rilles in and around Vallis Schroeteri are believed to have been vents for low-viscocity lavas and which led to their formation. This area in general provides dramatic three-dimensional surreal views as well as colouration including mustard-yellow, bluish tints and brown/muddy-red hues.

Note: For additional details in relation to the Aristarchus region, click here.