Suddenly, my friend stops and motions for me to stand still. "There!" he hisses, pointing to the river bank. "Can you see it?"
All I can make out is an empty patch of grassy bank splashed with shadows. Suddenly, one of the 'shadows' moves slightly and I can make out the long, scaly tail of a large monitor lizard. I want to rush forwards for a better look, but my friend holds me back and we watch in silence as the mighty beast suns itself on the bank.
We remain that way for several minutes, the three of us, one oblivious to the rapt attention of the other two. Then suddenly the monitor lizard sees a fish splashing in the river and slides off the bank to retrieve it. There is a short struggle, then both fish and lizard disappear from sight.
Stopping frequently to spy on the huge reptiles, my friend and I walk quietly and carefully through a large bamboo forest. It is hard to believe that we are just a short bus ride from Bangkok.
The intensely beautiful park of Buddhamonthon is located in Tambon Salaya, part of Nakhon Pathom Province. The park covers an area of about 1,000 acres and is an important religious site.
The park was built by the government in 1957 or B.E 2500 by the Thai calendar to commemorate the 2500th year of the existence of Buddhism. One of the main focal points is a bronze-gold standing Buddha image, which measures a colossal 15.8 metres. The Buddha image was named "Phra Sri Sakkaya Thosapol Yan Phratan Buddhamonthon Suta" by the current King, His Majesty King Bhumibhol Adulyadej.
Around the magnificent statue are four commemorative sites concerning Lord Buddha's birth, enlightenment, the first preaching sermon and his death. There is also a Buddhist museum nearby, meditation halls, a university and a large library.
The park is highly revered and popular during religious festivals such as Visaka Bucha Day, Makabuscha Day, Ananhabucha Day and the Loy Krathong festival, when tiny candle filled vessels are set onto the river.
In addition to being a sacred site, Buddhamonthon is also a place of extreme natural beauty. Filled with pretty ornamental gardens, bamboo forests and sparkling streams and rivers spanned by stepping stones and cable bridges, this is a great place to go for a walk or meditate in the shade of one of the mighty trees.
Because this is a sacred area, the wildlife is protected and the rivers and streams are teeming with fish. A peaceful pastime is to buy a bag of food from one of the vendors who wander around the park. As soon as the food touches the water the stream comes alive, the fish writhing so closely together that it seems as though the stream were made of fish rather than water.
You can buy almost anything to feed the fish with; from pungent fish pellets to brightly coloured corn snacks. My favourite fish treat is a huge bag of popcorn, which not only smells better than some of the alternatives but also seems to be very popular with the fish.
Among the other wildlife in the park are turtles, which splash happily in the streams and small canals and you will also see a range of brightly coloured bird in amongst the trees.
It can be quite hot and humid in the park, especially in the bamboo forest. Luckily, there are public showers next to the toilets and this is a great opportunity to cool off before getting the bus back to Bangkok.
Kirsty Turner (Kay) is a freelance writer currently living in Bangkok. She has kindly agreed to write for KhaoSanRoad.com and share her love of all things Thai and, especially, all things Khao San Road!