The Book of Skulls
Brilliant technically and in its conception but what a steaming pile of hot young male privilege this is. I kept having the feeling that I wasn't so much reading about 4 stock college characters as Four Aspects of Robert Silverberg in a Novel About a Quest for Enlightenment™. Published in 1973, this may be the most inadvertent damning I've ever seen of a decade known for excesses. He can be a great writer, but gold can tarnish over the years.