How did the neolithic age find obsidian?

During the Neolithic Age, people found obsidian through natural volcanic processes that created deposits near the Earth's surface. They would locate these obsidian sources by searching for areas with small pieces of the volcanic glass on the ground or by following signs of past volcanic activity like lava flows or volcanic craters. Once located, they would collect obsidian for making tools and weapons due to its sharp edges and hardness.