You will need to get to Wachirawut Bridge
Here you must catch one or more fish to move on. If you have not caught a fish after 45 minutes you may abandon this challenge. More fish, more points. Take a picture of each fish caught as evidence.
The supervisor will give you instructions and equipment. If this is your first challenge, then when you finish collect your next QR code  and walk to the next challenge. If it is your second challenge you may walk back to the resort.