Stone age societies are perfectly capable of advanced architecture and advanced sciences, in fact all civilizations in the Western Hemisphere including Polynesia were all in the "stone age" and yet built massive civilizations and traversed the largest ocean on Earth. They did not however do this without agriculture which is how they fed their populations and frankly American agricultural technology made the rest of the world look like an intellectual backwater, with everything from water gardens that gave 8 harvests a year without lying fallow and terraced agriculture on sheer cliffs and down the mountainside.
Could it be that a similarly advanced stone age society lived millennia ago? Yes, but without evidence of domesticated plants and animals the scientific community deems it impossible. Something I believe will one day be discovered is plants and animals that have reverted to their feral state after losing the population that domesticated them and the knowledge that many such societies probably mainly used perishable materials will reveal that small stone age cities have been around as long as humans have as our equivalent to the hive.
Could it be that a similarly advanced stone age society lived millennia ago? Yes, but without evidence of domesticated plants and animals the scientific community deems it impossible. Something I believe will one day be discovered is plants and animals that have reverted to their feral state after losing the population that domesticated them and the knowledge that many such societies probably mainly used perishable materials will reveal that small stone age cities have been around as long as humans have as our equivalent to the hive.