during Songkran festival, people may carry handfuls of sand to their neighborhood monastery in order to recompense the dirt that they have carried away on their feet during the rest of the year The sand is then sculpted into stupa-shaped piles and decorat. during Songkran festival, people may carry handfuls of sand to their neighborhood monastery in order to recompense the dirt that they have carried away on their feet during the rest of the year The sand is then sculpted into stupa-shaped piles