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I'm a sucker for anything that imagines humans in prehistoric times! The speculation of what life might have been like back then never ceases to thrill me. KSR creates such a rich and well considered narrative here. The way he describes the passage of time in particular is interesting and fluid, aware of time as both cyclical and not, both real and imagined. I have to imagine that it's challenging to craft an extended story like this one within the context of a period in which time was both very important in terms of survival and utterly meaningless in terms of how we utilize it to mark and denote everything and everyone that exists within it in the modern day. Overall the novel has a structure that had me frequently thinking "oh, is it about to end?" as I listened to the audiobook, only to be pleasantly surprised by the fact that several hours of story remained. You might find the novel boring if you're big on things moving fast and feeling urgent throughout, but I found its mixed pace that sometimes slows to a detailed crawl to be a pleasant one.