Rhumsiki Peak is a blade of bare volcanic rock 300 metres high standing out of the Mandara mountains in the Far North Region of Cameroon, on the Nigerian border, the hardened throat of a dead volcano whose cone eroded away, one of a field of such needles around the Kapsiki village of Rhumsiki with its dry-stone terraces and thatched houses, and it is watched from the ridge across the valley in the evening light, walked among on the terrace paths and visited for a diviner who reads the future with a crab. The plugs are the northern tip of the Cameroon Volcanic Line, the same crack in the crust that raises Mount Cameroon far to the south; the classic view is not from the peak but from the low ridge opposite, reached before sunset and waited on, as the needles go from grey to gold to black against the plain of Nigeria, and paths thread between the plugs and along the terrace walls where a day disappears. After the rains stop in October the harvest turns the terraces gold and the rain-washed air stands the whole field of plugs sharp to the horizon, before the Harmattan dust of December closes it down.
The crab diviner sits in a blacksmith's compound, since the smiths are the diviners of the Kapsiki: the visitor asks a question, the diviner shuts a crab into a clay pot with a scatter of sticks and calabash shards, and reads the answer from how the crab has moved them when the lid comes off, the pot being the real oracle. Under open thatch the Kapsiki men work narrow strips of cotton on wooden looms pegged flat into the ground and the smiths' wives turn pots beside them. The border region has been troubled by Boko Haram since 2014, and the visits depend on the security of the moment. Rhumsiki is a field of volcano throats with a village between them, and the crab tells the future at its foot.