The Delta is a science fiction novel by English writer Colin Wilson, published in 1987.
Plot summary The novel's main protagonist, Niall, heads for the Delta to investigate the source of a vital spiritual force which causes insects to grow large.
Reception David Langford, reviewing The Delta for White Dwarf #100, stated that "The Delta is better than promised by The Tower, but the crudeness of its SF tropes detracts from the more interesting Wilson philosophy."
Reviews Review by Jim England (1988) in Vector 142https://www.isfdb.org/cgi-bin/title.cgi?8904 Review by Andy Sawyer (1988) in Paperback Inferno, #75
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