A long time ago, in a galaxy far, far away, Dan Simmons could write long, compelling science fiction, fantasy and horror novels that would keep readers up so late, propping up huge tomes (CARRION COMFORT; SUMMER OF NIGHT; HYPERION and THE FALL OF HYPERION; ENDYMION and THE RISE OF ENDYMION) for so long, that carpal tunnel syndrome would set in. Around the time of the Second Coming of the G.W. Bush/Cheney administration, Simmons lost touch with his story-telling "chi". Happened somewhere in the middle of his last SF duology (ILIUM/OLYMPOS), with the second book falling off its narrative rails from the get-go, and Simmons giving into his urge to always be didactic (signs of this seriously fun-sucking urge, first cropped up in the beginning chapters of CHILDREN OF THE NIGHT -- Simmons fought back the urges with aplomb for a great while, until he sat down to begin typing ILIUM). This "new" Simmons has taken to writing historical novels that either don't know when to end, don't know where they are headed, or -- both. In the case of THE TERROR, it was copious verbiage which wounded the narrative (albeit, not fatally). In the case of DROOD, the writer had a terrific character (the fictional Wilkie Collins) but no place to go: so he ended up dragging both Collins and the reader down endless blind alleys to finally end up at...another blind alley (that was a novel which should have been a novella -- but novellas don't sell well).
Now we have BLACK HILLS. Many novels Simmons writes often harken back to one of his short(er) fictions: CARRION COMFORT was first a novella (and even better as a a huge novel); HYPERION was first a short story ("Remembering Siri"); ditto for THE HOLLOW MAN ("Eyes I Dare Not Meet in Dreams"), CHILDREN OF THE NIGHT ("All Dracula's Children"), etc. Thus, some of the themes in BLACK HILLS, the history of the Lakota, etc., can be traced back to "Sleeping With Teeth Women" (found in the story colleciton, LOVEDEATH). But the overall plot/story involves an aging indian named Paha Sapa (who happened to be near the General just as he fell dead, and) who is haunted by the ghost of George Armstrong Custer all of his life, and finds himself on the crew to help finish Mt. Rushmore. The indian decides to use that opportunity to commit a terrorist act and destroy the monument, when Pres. Franklin Delano Roosevelt visits the site. It's a good, solid idea, and one that the "old" Dan Simmons mostly gives its narrative due. Unfortunately, the "new" Dan Simmons steps in to ruin things. In DROOD he put a slimy spin on the character of Charles Dickens (brilliantly doing so via the back-stabbing "character" of Collins) and in BLACK HILLS he puts a neo-conservative spin on his fictional version of Custer, taking a man who -- despite a few attempts at revisionist history -- was and is generally acknowledged to have been egocentric and a reckless leader, and turning him into a brave, military strategist, and a sort of romance novel "leading man" (luck may have been on Custer's side many times, but he was reckless nonetheless; whether he was a romantic or just a horny individual, is something only long-dead lovers can know). While that revisionist characterization is a bit disappointing and distracting, what really slows things down is the "new" Simmons's penchant for trying to lecture, pontificate and "teach." The majority of one chapter is spent describing the building of a bridge. Don't get me wrong, it is well-done -- in fact, like most of Simmons's writing these days, it is over done -- but it is hardly necessary to the story. Such a diversion certainly has no place in a book that seeks to thrill its audience (even the "ghost" in Paha Sapa's head agrees, at one point, needling him with, "...now that you've got that out of your system, can we go get ready to keep the appointment now?").
What's more, most of the dialogue sounds like something written to be spoken on a documentary, by the guy narrating said documentary (which may be something Simmons is more suited to these days). Give a listen to Paha talking to his son: "The revolving Hotchkiss cannon had five thirty-seven-millimeter barrels and was capable of firing forty-three rounds per minute." Don't know about anyone else, but my dad never expended so much hot air, even when getting into details. And as another reviewer has already pointed out, the "new" Simmons still doesn't know when to end a story. He lets his didactic, I'm-in-love-with-everything-I-say/write urge get the better of him, tacking on an epilogue that would have been better-suited to an endnotes section. Overall, a book that falls closer to THE TERROR in its storytelling sensibilities, but still not quite far enough away from the didactic preachiness of the "new" Dan Simmons to avoid inescapable moments of narrative drudgery -- and the full-on stop of verisimilitude -- which can arise from such indulgences.