All funerals are sad and creepy, but they’re way better than feeding the corpse to a bunch of hungry eagles.
Sky burials are often practiced in the mountains of Tibet, both for religious and practical reasons. Basically, the corpse is placed on a mountain top and sliced open in various places, to attract the birds of prey circling above. They’d probably feast on it anyway, but an invitation like that doesn’t hurt.
Most Tibetans are Buddhists and believe in rebirth. Once a person dies, their body is considered nothing more than an empty vessels that needs to disposed of. Since the ground is often as hard as rock and wood and fire are precious resources, feeding nature’s creatures is a practical choice. I know it looks grotesque, but to Buddhists this is a last sign of generosity by the deceased, offering his body as nourishment for other living creatures.