In the wake of the West Indies and Reunion, the French government planned to make Mayotte a sugar island: despite the steep slopes, large plantations were developed, 17 sugar factories were built and hundreds of foreign workers (mainly African, in particular Mozambic Makwas) hired from 1851 onwards. However, production remained mediocre, and the sugar crisis of 1883–1885 quickly led to the end of this crop in Mayotte (which had just reached its peak of production), leaving only a few factory ruins, some of which are still visible now. The last sugar plant to be closed was Dzoumogné in 1955: the best preserved, and now heritage, is Soulou, in the west of the island.