Khao Yai National Park or Big Mountain attracts one million visitors a year, mostly from Bangkok, which is only a 3-hour drive away. Khao Yai boasts four vegetation zones, spanning elevations from 100 meters to more than 1,400 meters. In its forest and savannah, the park supports a wild elephant herd estimated at 300. Another attraction is a vast population of hornbills of various species being great hornbill, wreathed, oriental pied, and brown. The trip will start from Bangkok in the early morning, around 6:00 AM. You will be greeted by a friendly driver and drive 3 hours to visit the first national park in Thailand. Along the way, you will have a chance to spot greenery wild animals like deer, monkeys and many more. You might even spot an elephant if you're lucky! If you would like to trek in the jungle with a park ranger, select this option while booking. There are up to fifty hiking trails following the migratory paths of wildlife to scenic waterfalls such as Heaw Narok and to grassy savannahs where elephants roam. On this journey, you will be trekking around 3-4km, which is an easy trail of 2 hours. You will also get to visit observation towers which will make it easier to see from the top. Your park ranger will serve as a guide and escort you around while sharing interesting information. At the end of your day, you'll arrive back at your hotel in Bangkok between 5:00 and 6:00 PM.