Thailand is a place of a thousand landscapes, dominated by lush forests, rolling hills and extensive rivers systems that feed into the mighty Mekong. Here the Mekong river continues it's journey down the Eastern border, winding it's way through biological and geological crossroads, sculpting the landscape and the lives of the creatures that live there. As the Mekong carves its way down Thailand's eastern border, huge expanses of jungle are broken up by a network of waterways. Flooded landscapes make way for deep pools which are enjoyed by many different animals. One particular animal uses these to escape the midday heat. In a quiet pool a female elephant and her calf enjoys a well deserved bath. The bond between a mother and calf is intimate, they make time for play using their trunks as snorkels as they cross the water to reach fresher pastures. Rhesus macaques live along the rivers and streams that flow through the mountains and into the Mekong. These waterways are their favourite place to forage looking for tasty treats that lie hidden beneath the leaf litter, their tiny fingers are perfectly suited to the task. They prefer fruit but just about everything is on the menu: happily eating bark, leaves and any small creatures they can catch in the shallows. But sometimes animals need to supplement their diet with things other than food. Macaques and elephants eat clay to get salt and minerals they would not be able to obtain through their diets. The tropical rainforests that flank the Mekong as it winds its way South, are home to most. But many of these species won't be seen in daylight. Over the millennia the Mekong has carved its way through limestone outcrops containing vast networks of caves which attract many different bat species. They pass the day, sleeping, digesting and grooming. Waiting for dusk when their prey is most active. A time when thousands of bats stream from the mouth of the cave looking to find insects. Further down the river an ancient Buddhist temple is home to the largest bats on the planet. Unlike their insect-eating counterparts, which tend to roost in caves during the day, flying foxes are well adapted to daylight. With a wingspan of one and a half meters (5 feet) hundreds of flying foxes are suspended upside down roosting in the surrounding trees, squabbling over the best branches. They drop dramatically out of trees before their enormous wings catch flight, flying off to find a bounty of fruit to feed on for their afternoon meal.