Ace, 1967. Title and author are in Benguiat Zenedipity, condensed and obliqued, nicely echoing the slant of the rock in John Schoenherr’s cover art. The text in the starburst uses caps from Lydian Italic. [More info on ISFDB]
The Western-style slab serif with flared bottom halves was drawn by Ed Benguiat for Photo-Lettering, apparently as spinoff of Benguiat Serendipity, which is a more conventional Barnum (with Benguiat Buffalo being a rounded version). The all-caps Zenedipity is shown in PLINC’s Alphabet Thesaurus, Vol. 2 (1965) in two widths. Athird Wide style is initially listed as exclusive design. It’s shown in Vol.3 (1971). I’m not aware of a digitization.