Translation of patina in German

It was better to avoid this city at the moment, although it is supposed to be one of the more beautiful ones in the entire region. It is considered historic, beautiful and a culturally important city.
We joined the mass and climbed it. The stones were a little slippery and I doubt that this place is accident free. Climbing big slippery stones was not an easy task but we managed it slowly.
The hill was not close to the village and we did not have a lot of water with us, so that we were happy when a Brazilian couple took us closer in their rented Jeep. We walked a little further.