Songri was the guide that we booked the tour with. Due to family matters, Songri was not able to be our guide but she took care of us by finding another guide. She communicated all this to us well in advance. Nathan was our replacement guide and he was excellent. He gave us lots of information, both historical and cultural, and planned out the trip very well so that we would not be too tired from the heat. Excellent tour and highly recommended.