Create a detailed black-and-white sketch of Mahadev (Lord Shiva). The sketch should capture his serene yet powerful demeanor. Depict him with his traditional attributes: the third eye on his forehead, a crescent moon in his matted hair, and the sacred river Ganga flowing from his locks. Include his trident (trishul) and the damaru (drum) in his hands. He should be adorned with serpents around his neck and arms, and wear rudraksha beads. The backdrop can feature the Himalayas, symbolizing his abode, with a hint of Mount Kailash in the distance."