Willka Raymi (Quechua willka grandchild / great-grandson / lineage / minor god in the Inca culture, an image of the Willkanuta valley worshipped as God / holy, sacred, divine, willka or wilka Anadenanthera colubrina (a tree), raymi feast) [1] [2] [3] is a feast celebrated in the Cusco Region in Peru. It is the representation of the traditional offering ceremony to Pachamama. [4] The celebrations are held annually on August (24th) in the archaeological complex of Pisac.