Most of what is known about elements of this original belief system is based on the analysis of legends, the study of place names and scant historical references to pagan rituals practised by the Basques.
However, due to the scarcity of the material, it is difficult to say if this would have been the "central pair" of the Basque pantheon.
Based on the attributes ascribed to these mythological creatures, this would be considered a chthonic religion as all its characters dwell on earth or below it, with the sky seen mostly as an empty corridor through which the divinities pass.
[3] The Iberian Peninsula's Indo-European speaking cultures like the Lusitanians and Celtiberians seem to display a significant Basque influence on their mythologies.
This includes the concept of the Enchanted Mouras, which may be based on the Mairu,[4] and the god Endovelicus, whose name may come from proto-Basque words.