If you are staying at Lagundi take a walk to a local traditional village which are usually built on the tops of hills for security. Each village was a separate entity and often mini wars would erupt and killings take place, even as recently as the 70's. Warriors attacked other villages to find slaves, and sometimes they would behead their captives and place their head under a house that was about to be constructed. The village is usually rectangular with a row of houses on each side. In the village you will find places where they would sacrifice their victims. The villagers used to practice stone jumping (2m high) with a sword in their hand in order to train young warriors. there will be many stone sculptures to see, in particular huge round stones piled up in the villages which were used as money. Chairs, tables, tools, utensils, even pillows were made of stone, and of course there was a sacrificial places too, usually in front of the chief's house. The 2005 earthquake did a lot of damage to the village along the coast but the more traditional villages in the hills were safe.
afia beach is not an official tourist destination. i just found it accidently when my family took me there. o my God, the beach is huge, the sand is white, clean, and so...so...soft. I've never been in such a soft beach. it's so quiet like you have the whole beach only for you. the wave is so calm, not like in Lagundri. no seller, no nothing, only you and the beach. and this is a perfect place to wait the sunrise. but since this is not an official tourist destination, you have to borrow their bathroom if you need any. but, shtt, there is a taboo here that woman can't touch the fisherman boat. and perhaps you will get unnecessary attractions if you wear a bikini.
bombo aukhu means hot boiling water. but not to worry, the water is just warm. this warm natural source indicates that nias had/has a vulcan. the place is relaxing, the view is nice, quite green, quite clean, but the facility is basic. if you have several days to spend in nias, this is a worth place to be visited. the journey to this place is also beautiful, sorounded by cacao plantation. coconut is just every where, challenge your guts across the thin natural coconut tree brige. :)
the culture in south-nias is sightly different compare to north nias. find the complete collections of nias culture here. look at the north nias traditional house, small zoo, a plenty beach. this museum is run by romo yohanes, a german priest who devote his life to niasan people. if you want to know anything about niassan culture, this is the centre!
this is one of the best niasan culture preservation. you can see the unique architecture of south-niassan traditional house, watch the war dance & the stone-jumping, buy any niasan sclupture/handycraft. you will see how the niassans understand their colective or social lives.