THE Copper Canyon is a natural wonder located in the northern Mexico mountain range known as the Sierra Madre Occidental, and it covers approximately 20,000 square miles [50,000 sq km], an area equal to about the size of Costa Rica.
और यह घाटी लगभग 50,000 वर्ग किलोमीटर तक फैली हुई है जो कि कोस्टा रिका देश के क्षेत्र के बराबर है ।