Khao Yai can be a dream holiday destination for the ones who really love nature. It is exactly what I have in mind and I have some dream about it as well. There are diversity of nature in this tropical forest. There are abundance of wildlife, tigers, leopards, elephants, deers, bears, etc. You can find approx. bird species and a lot of colorful butterflies. Besides, you will be surrounded by nature; there are various kinds of plants, mountains, forest, streams and waterfalls. (the famous waterfall is Heaw Suwat Waterfall)
Moreover, there are a lot of outdoor activities that you can do during your dream holiday there; i.e. camping, trekking, wildlife watching, bird watching, etc.
I can say that Khao Yai will be your memories of a more relaxed life. Consider Khao Yai as your dream holiday destination! Bon Voyage!
cr. pic. https://www.youtube.com/watch?v=DSHwZtjr9js