This stand-alone 1981 novel consists of three novellas (the first two originally published separately in 1975 and 1980) and an epilogue. The stories are set on the planet of Windhaven which is almost entirely covered by ocean except for a few widely-scattered groups of islands. These islands were populated by the survivors of a spaceship crash-landing generations before the events in the novel. Due to resource shortages the civilisation has regressed to the medieval level with one exception: they still possess quantities of almost indestructible but extremely thin and light fabric, ideal for making glider wings. The Windhaven weather is almost always windy and frequently stormy and, although not specified in the book, the combination of surface gravity and air density is sufficient to support long gliding flights by highly-skilled hereditary "flyers", with the aid of folding wings with a twenty-foot span. The high-status flyers form the main communication links between the islands, as shipping is hazardous due to the storms and sea monsters.
Although nominally SF, there are no mind-stretching concepts other than the initial premise described above. The story is really about people; their alliances and antagonisms, struggles to succeed, failures and successes.
The novellas focus on the story of three stages in the life of Maris, a girl of humble origins who is adopted by a flyer and thereby given the chance to learn to fly – the only thing she has ever wanted to do. She is faced by many obstacles and problems throughout her life, and this is far from a "happily ever after" story. It is something of an emotional roller-coaster ride, being very moving in places. There are some impressive set-pieces such as the intense and brilliantly argued debate at the end of the first part in which the flyers decide who should and should not have the right to be trained to join them.
The character of Maris is superbly developed throughout the book and the richness of the descriptions of the society, the personalities and the emotional intensity of their complex and ever-evolving relationships irresistably drew me in. I found myself really caring about what happened, sometimes even reluctant to carry on reading because of the dangers Maris courted and the pain and disappointments she suffered.
Windhaven is not a long book by modern standards but nonetheless tells an epic story, the stuff of legend. It is beautifully told and deserves to be far better known, and I highly recommend it.