What's this?

Shetai had known the mountains for many years. He has passed by the mine and never gave any intrest of gonig inside it. The creature seemed to ignore it until now. Shetai had accidently dropped a berry inside the cave, he saw it keep going then disapeer into darkness. He decided to follow the berry inside. Once he found out it was a cave, Shetai had luckily brought his hammer. It had two ends, one was pointed and the other side was just flat. Shetai prospected where a good source of materials were.