If you look closely, you can just about see the characters and scenes that once stretched across the walls of Wat Prasat, a temple in Nonthaburi. There’s the dark shape of an elephant’s head, a figure slouching on its back; outlines of swords pointing upwards to the centre of the display; patches of curved roofs.
“The mural used to be more vivid,” says Phra Maha Natee, the abbot of Wat Prasat. Even when he was a novice monk, 20 years ago, the image – which shows one of the jātakas stories that recall the Buddha’s past lives – was easier to understand. “The colour was brighter and sharper,” he says.