After asking left and right, Sol finally got the information he wanted, the mine was discovered by a group of people who was inspired by him, they were to kill something big and become famous just like him.
There were a few groups like this but most came back without any result or even not coming back at all.
The group found an entrance into a cave and tried their luck there, they found some kind of glowing crystals near the entrance, they thought it was shards but when they touch it, nothing happened.
They found nothing more as they did not go deep into the cave, they choose to get back after a few hundred meters because they did not bring any source of light.
The group thought they found something precious and decide to come back later after some preparation.
They brought the crystals to the pawnshop and jewelry shop but none of them thought it was precious, it was then that they tried their luck with the temple of Vulcan.