The two presas in the mountain valley above Santo Domingo Tomaltepec are a frequent and much-loved destination for scenic bike rides from Oaxaca. The nearest, Presa Rosita, is not as pretty or accessible as the second, Presa Mina. The latter was the end point for both our small group of eight bikers and quite a number of other cyclists out enjoying a Sunday ride on a lovely day at the end of November. Quite a few fishermen were also gathered at the lake, testing their luck with a variety of lures. Two of our party went for a swim in the lake. The day’s gentle loop ride covered 39 kilometers (24.2 miles), with 265 meters (870 feet) of elevation gain and loss on the circuit. Moving at a leisurely pace, with a stop along the way to sample tamales from a street vendor in Tlalixtac, the group spent four hours in the saddle.