The Chiang Mai moat, encircling the old city has a bastion, known in Northern Thai as jaeng or 'corner', has its own particular character. Jaeng Katam, or 'Fish Trap Corner', where local people used to catch fish in a large pond which has long since disappeared. Today Katam Corner is a quiet place, and influences the city's strength and fortifications. It is associated cosmologically with Wat Chai Si Mongkhol.