I Transmigrated to a Primitive Tribe on the Brink of Destruction

Baihe and her best friend Yunduo planned a camping trip to celebrate ten years of friendship, but they were caught in a violent storm. Their phones had no signal, the GPS stopped working, and their tent was blown away, so they had no choice but to take shelter in a cave. When they woke up and stepped outside, they found themselves facing a scene of animals stampeding past. Behind them, a group of people dressed in animal skins chased after the beasts, clutching stones of every size. Had they transmigrated? And into prehistoric times, no less?