_The Stonehenge Gate_ by Jack Williamson reminds me of some of the older, "Golden Age" science fiction stories I read in anthologies growing up, in books I found in my Dad's collection or in used bookstores, where educated, adventurous but otherwise seemingly normal people come across alien artifacts, hints of lost civilizations, technology so advanced it looks like magic, the stories not jaded at all but filled with a sense of wonder, of "gee-wiz," of amazement at the bigger-than-life mysteries of the universe.
The novel's four main protagonists, at least at first, are four poker buddies, college professors at Eastern New Mexico University. Derek Ironcraft is a physicist and astronomer, Lupe Vargas is an archaeologist (the sole woman of the group), Ram Chenji is an African linguist that Vargas met on a dig in Africa and got him to the United States on a scholarship, and Will Stone (the narrator) is a English literature professor specializing in Shakespeare; together they call their little group the Four Horsemen. One night Derek shows the group interesting NASA images of a buried structure deep in the sand seas of the Sahara Desert, images that appear to show a megalithic, Stonehenge-like structure. Though Lupe is tremendously skeptical of the image, or at least of Derek's interpretation of it, saying that the region is not known for such artifacts and is located in an area that the last time it was decently habitable by humans was hundreds of thousands of years ago, well before they were building such structures, she eventually embraces the group's enthusiasm and the four of them manage to make their way to the very remote site, initially hoping during a break between classes to find enough there to justify a grant and a return trip.
Dropped off by chartered helicopter among the remote dunes, many days travel from the nearest thing approaching civilization, they do indeed find that the satellite image was correct, that there are buried megalithic structures. They also find prior to their arrival that Ram had a very unusual background, that he grew up in Kenya, partially raised by his elderly grandmother that he called Little Mama, a woman who spoke a strange language and had taught some to Ram against his father's wishes and given him a strange pendant that had defied the few attempts he had tried to analyze it, covered with enigmatic writings and made of some unfamiliar material. Little Mama before she died had told Ram of having come from some other world, of having to go through Hell before she found the road to Heaven. Perhaps a little convenient, at least in my mind, but it becomes apparent to the group that Little Mama had somehow come through these megalithic structures from some other world.
In very short order they find that they are gates to another world. Indeed, gates to worlds, plural, as the Four Horsemen hop from world to world, for a time separating, seemingly permanently though there are hints that the missing members are alive and well. The first world they encounter was deadly, apparently a trap for unwary gate travelers, but after overcoming those difficulties the remaining team members come to an apparently very Earth-like world, complete with familiar plants and animals. Perfectly maintained (and to my mind a tad too familiar) buildings, roads, parks, and farms are present on the planet, lovingly tended by bizarre robots, but not a sign of people or what had happened to them. Though most things look pristine and untouched, they do come across evidence that what ever had happened to the people had happened a very long time ago.
The tone of the book changed abruptly though when they journeyed to another world, one that is very much inhabited, having a series of adventures on it that encompass a great portion of the book. Though touching on the possible destiny and strange origins of Ram and his people, the interlude on this world, one they later called Delta, had an entirely different, almost jarring tone from what came before and after in the story. Delta has two continents - Norlan and Hotlan - that are inhabited each by a native race of humans. Norlan is home to a race of mostly blonde imperialist European types, technologically close to that of late 19th century Earth as far as I could tell, while Hotlan was home to black African-like tribes and villages in the dense rain forest of a wilderness continent, largely beyond the reach of most Norlanders. The main characters become embroiled in the lives of individuals from both Hotlan and Norlan and in the growing conflict between the two groups (as the Hotlanders are for the most fantastic racists, not regarding the Hotlanders as human and at least officially condemning all mixed race individuals and their parents to death). Though the story was a decent tale of adventure and fairly atmospheric, it didn't flow well with the odd, otherworldly place they found before Delta and their discoveries about the builders and their origins in the incredibly distant past later on. It was as if I was reading an entirely different novel.
The best drawn out characters are Will, who comes across as timid and passive at times, at other times willing to risk everything to save a friend, including friends he makes in Hotlan, and Ram, who is a fairly complex character, constantly at war with himself, struggling with what may be some sort of preordained destiny that was thrust upon him in Hotlan and the life he really wants to lead. Derek and Lupe were a bit less well drawn and not as major characters as either Will or Ram, their time and energy almost single-mindedly spent on trying to solve the riddle of the gates, the builders, and their various worlds and what that means for all of human history.
Certainly not a bad novel, it was a fast read.