Aug'2013 OK Technically the restaurant is in Pak Chong but the location is know to all as "Khao Yai", Thailands biggest National Park. The location is a bit of the main-road, about 15 km from highway 2 at Muak Lek. But easy to find because of the (very clever design in) signs along the road. So I had lunch here last week and I was very pleasantly surprised. They have both indoor and outdoor seating in a stunning locations between the vine-yard of "PB Valley Khao Yao Winery". The staff was friendly although probably a bit tired after a long and busy weekend. I had 2 starters and dessert and had 1 drink (fresh grape juice) with a total price of about 650 Thai baht.
Not cheap but worth every satang, so yes the food was really good. As said the restaurant is part of a vine-yard & winery so of course there is also a wine-shop. And they have 3 times a day a tour at the winery with wine tasting (at 10:30, 13:30 and 15:30). As I did not have time for the tour I am sure I will come back for a lunch & tour! Highly recommended! For more information have a look at The Great Hornbill Grill.