I am assuming these are graves. In a way similar to the Sumbanese style of tomb. But the tomb of a lesser mortal rather than a king. The previous king of east Sumba had an 80 ton carved block as his headstone.
The concrete here is covered in tiles, so I assume these individuals were well regarded. Although it would appear from my observations that there isn't a central burial ground. The family bury their dead on the family's land.
As I scootered into town, the heated grip of the early afternoon not yet loosening I spotted a goat. 2 goats as the pictures show. The slower of the 2 in the process of making himself comfortable. His mate was already down. I assume enjoying the coolness of the tiles. I missed the Kodak moment of the goat kneeling on the tomb, almost as in prayer, as he eased himself down. Gingerly down onto the front legs, then the rest followed, head bowed (well, not really) contemplating life and death. More likely a cool spot under a roof, to watch the world go by.