We took our mountain bikes and rode from Caraz up to Lagun Parón and back. The lake is the largest lake in the Cordillera Blanca and got its color from the high concentration of dissolved lime. It is surrounded by 8 mountains which are all above 5000-6000m (19000-22000ft) and snow covered. One of the mountains is the one Paramount Picture uses as their logo. Out and back was only 44mi, but climbing 7000ft when you start at 7000ft changes things a bit. It took 5 1/2h up and 1 1/2h down. It wasn’t all fun, but the views were rewarding.