Strzelin is the second, after Strzegom, Polish stone-working center. This is why it is the starting point of the very interesting route linking closed and still active granite, basalt and limestone mines. The route is 56 km long and presents the geological wealth of the region. It starts it in the vicinity of Europe's largest granite quarry in Strzelino (Note! No trespassing - the is still operational), passes through the former basalt works in Kowalskie, the limestone quarry in Przeworno, or the marble quarry in Gębczyce. Let us remember that entering into the operating quarries is extremely dangerous!