Ariyannur Umbrellas is a prehistoric Megalith burial site situated in Ariyannur in Kandanassery Panchayat of Thrissur District of Kerala. Archaeological Survey of India in 1951 declared it as a centrally protected monument. The site has six umbrella stones or mushroom stones, locally called Kudaikkallu. Of them, four are intact and two are partially broken..These are part of the larger Kudakkallu Parambu complex which is believed to be from ~2000 BCE.