A tragedy with lots of portents, not like in a novel by (one of my favorites) Thomas Hardy, but a wonderful Romantic novel as defined by the Merriam-Webster dictionary. " a literary, artistic, and philosophical movement originating in the 18th century, characterized chiefly by a reaction against neoclassicism and an emphasis on the imagination and emotions, and marked especially in English literature by sensibility and the use of autobiographical material, an exaltation of the primitive and the common man, an appreciation of external nature, an interest in the remote, a predilection for melancholy, and the use in poetry of older verse forms"
Much of that definition fits but certainly not "an exaltation of the primitive and the common man."
Hoel's hero is the modern man, a scientific man, an idealist whose goal is to improve the lives of the cotters who live in the parish by teaching them modern farming. These efforts are not only scorned but openly savaged. The good will Havard tries to extend to them is not reciprocated and he is judged "the outsider." The common man and woman in this book are petty, spiteful, ignorant and evil. Havard won my heart by his kind treatment of animals, his inability to watch the slaughter of the farm stock and his deep love of nature.
I wonder if there is a comparison of The Troll Circle and The Growth of the Soil (which I recently read) by Knut Hamsum. Hamsum's hero is a supermensch who toils and wins and expands his conquest over the rough land alone with his wife. Hamsum was a racist and a Nazi sympathizer. I see his book The Growth of the Soil as an expression of this....but maybe I am being too critical. Hamsum died in 1952 and Hoel died in 1960 so they were contemporaries. Hamsum won the Nobel Prize but was called "a ghost that wouldn't stay in his grave." I prefer The Troll Circle to Growth of the Soil, but that's just me.