The Festival of the Reversing Current is a festival and national holiday to celebrate a natural phenomenon in Cambodia. Tonlé Sap, a lake, is connected to the Mekong River by the Tonle Sap River, which normally flows south from the lake. But during the rainy season, the flood-swollen Mekong backs up and flows backward through the Tonle Sap River into the lake. The normal southward flow returns when the dry season starts. The festival, held at the time when the Tonle Sap returns to its normal direction, is a time of fireworks, merrymaking, and races of pirogues, or long canoes, at Phnom Penh. Discuss