Khao Yai National Park - getting there?

Another vote for Greenleaf. We arrived by train, telephoned them and were picked up. Accommodation was OK, food good, everybody friendly. We had a wonderful guide who was most impressed when Mrs Faz identified a particular bird. We are still (after 3 years) in correspondence with him.

I spent a couple of nights camping there in April - here's the link

http://www.fodors.com/community/asia/camping-in-khao-yai-and-song-khran-in-udon-with-the-redshirts.cfm