Abono

Geologists established in the 1960s that the crater was formed by a meteorite collision roughly 1.07 million years ago. Rain and small streams filled the hollow over the centuries, and because the basin has no surface outlet, the water simply stayed — which is why Lake Bosomtwe is Ghana's only true inland lake. It is a rare thing: one of only six meteorite lakes in the world, about 10.5 kilometres across and up to 81 metres deep, ringed by crater walls that rise steeply from the shoreline.

Asante oral tradition tells it differently, and more beautifully. A hunter from Asamang, named Akora Bompe, shot and wounded an antelope. The animal fled into a small pond and vanished; when the hunter looked, he found fish instead. He returned, and the same thing happened again. The pond grew into a lake, and he named it Bosomtwe — "antelope god" — in remembrance of the spirit that led him there. The Ghana Commission for UNESCO records the story as told by the chief of Aborodwum, with the hunter's wife, his dog Hyiawu, and the rituals performed at Asamang that gave the lake its name. Both accounts are true to the place: one measures its age, the other explains its hold on people.

For Asante traditionalists, Bosomtwe is sacred. Some hold that a deity called Twi resides in it; others that the souls of the departed visit its waters on their passage to eternity. Each village around the shore keeps its own shrine or fetish grove, and many people still come to these for help in hard times or against illness. At the lakeside stands the Abrodwum Stone, believed to be the spiritual centre of the lake. When yields are poor it is read as a bad omen, and sacrifices are made in the presence of the Asantehene: the innards of a cow are offered to the stone, the rest thrown into the water, and the crowd rushes in to take a share.

The most visible expression of that reverence is on the water itself. It was once taboo for iron to touch the lake, so conventional boats were never used. Fishermen still go out on the padua, a large wooden plank they sit on top of and propel by hand or with a plate — a craft that takes real skill and can capsize easily. Dugout canoes remain taboo, though a few engine-powered boats now cross the lake, an accommodation between old belief and tourist income that sits uneasily with some in the community. The lake was also, in the past, the main source of fish for the tables of Asante kings, and traditional laws were made to keep it clean.

Abono is a fishing community, and the lake has shaped its economy for generations. Around 24 communities ring the crater, and the population of the biosphere reserve is put at roughly 50,000 to 70,000 people whose main work is farming and fishing. Cocoa, subsistence crops and animal rearing have grown in importance as fish stocks have fallen. The lake's level has also been rising over the years, forcing villages to move uphill; you can see the evidence in tree trunks standing out of the water, and in the numbers that follow some village names, marking how many times a settlement has been rebuilt.

This is a place with real pressures as well as real beauty. Overfishing has thinned catches, plastic waste washes into the water, and tourism brings both income and friction — boat traffic disturbs fish, and shorelines take on more litter. In 2016 the area was designated a UNESCO Biosphere Reserve, managed through a community resource management arrangement that gives local people a say in decisions, with zones set aside for protection, research and sustainable use. Scientists from Ghanaian and German universities have worked here on climate research and on ways to broaden livelihoods beyond fishing. Visitors who hire local guides, buy from lakeside traders and tread lightly are part of that balance, not outside it.