The researcher Claudine Friedberg explored the rituals of the Bunak people in Abis (Lamaknen) during the 1970s to the early 1980s and described in detail the ceremonies of the Bunak people in this region. However, the place no longer exists and a road now connects the region with the outside world, which previously could only be reached with horses at that time. Agriculture here is entirely dependent on the amount of monsoon that occurs. The reliability of sufficient rainfall is the critical moment of the agricultural calendar during the sowing season. It takes place in Lamaknen before the rain comes between October and December. The fields are prepared by means of slash-and-burn. Then the 'Lord of the Seeds' and the 'Rice Masters' lay down the dates for numerous ceremonies. The 'Lord of the Seeds' belongs to the clan to whom the legend is attributed to the sacrifice of Bei Suri. It is, however, none of the nobility houses. On the other hand, 'Rice Masters' are the guardians of the holy objects of certain, distinguished clans.