Natmasses were spirits worshipped in the ancient culture of the island of Aneityum

Anatom

Anatom is the southernmost island of Vanuatu. It is in the province of Tafea. The largest village is Anelghowhat , on the south side. The island is 159.2 km² in size...

, Vanuatu

Vanuatu

Vanuatu , officially the Republic of Vanuatu , is an island nation located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is some east of northern Australia, northeast of New Caledonia, west of Fiji, and southeast of the Solomon Islands, near New Guinea.Vanuatu was...

. They were manifested in the form of stones. "Stones were the chief fetishes, or representatives of the natmasses (spirits), these were all sizes from that of a pebble to blocks of some tons weight. About a mile inland from our station are two blocks, each as large as the roof of a small cottage; both of them were recognized as natmases. The one, the large one, was called the sun, and the other the moon. The sides of the larger rock are marked with some rude, sculptured figures of fishes and birds, and as one of the best fishing grounds could be seen from these rockes, certain incantations performed on these were believed to affect the success or non-success of the fishing. Every family had a basket containing a collection of natmasses of their own, a sort of penates or household gods, which they worshipped as a family."