The ride in Queretaro

Following my belief to make the most of the time away from home, I found out of a cool place to ride a bike while doing some work on the very nice city of Queretaro.
Queretaro is close to a couple of sierras, on one of them called The Aserrin, local cyclist have developed some fun trails, but very challenging from me since they are at 7,000 feet, and being a costeñito the climbs hurt.
El Aserrin rules, tough climbs, a couple of falls, blood, the works.