After studying at the École des Beaux-Arts in Lyon, Auguste Morisot spent two years as an illustrator on an expedition in search of the sources of the Orinoco in Venezuela. The discovery of the Equatorial Rainforest played a major role in the development of his spiritualism. This is evident when looking at this triptych, three works which were not previously designed as a series but which took on meaning in accordance with the artist's wishes. This triptych revisits the theme of paradise lost, although Morisot, a fan of symbolism, was not content with evoking paradise, the fall and redemption. This theme became part of a very personal vision, despite a number of influences. It includes the ‘voices of the forest’, the title of one of his letters from 1907, and the spiritualisation of nature which goes beyond conventional religion to become universal, despite clear Christian references. It is all the more interesting to note that in spite of this desire to go beyond traditional iconographies, the artist cannot avoid a fascination for the Gothic in his portrayal of a ‘natural cathedral’.