Related by context. Frequent words. (Click for all words.) 57 pre Columbian 57 Incan 56 ancient 54 Incas 54 ancient Mesopotamia 54 ancient civilizations 53 stupas 52 neolithic 52 Mesoamerica 52 pictographs 52 prehistoric 52 Sumerians 52 Chaco Canyon 52 antiquity 52 ancient civilization 52 Olmec 51 Mesoamerican 51 Byzantine era 51 Inca empire 51 Bronze Age 51 archaeological finds 50 Ming Dynasty #-# 50 Neolithic 50 codices 50 #BC [003] 50 coprolites 50 Mughal era 49 pottery shards 49 Sassanid 49 Chachapoyas 49 Etruscans 49 prehistory 49 ancient Mayan 49 Mayan 49 Inca 49 flint tools 49 Wari 48 archaeological 48 thirteenth century 48 Moche 48 inscriptions 48 lake sediments 48 archeological 48 burial mounds 48 Peruvian Andes 48 Han Dynasty 47 hieroglyphs 47 Palenque 47 microfossils 47 fifteenth century 47 archaeologists 47 archaeological discoveries 47 Rig Veda 47 red ocher 47 Nazca 47 marine sediments 47 millenniums 47 excavations 46 ancient relics 46 stele 46 archeological excavations 46 Shiva temple 46 Thracian 46 Anasazi 46 parchments 46 ancient Mayans 46 millennia 46 Spanish conquistadors 46 relics 46 centuries 46 Iron Age 46 Canaanite 46 classical antiquity 46 zircons 46 Ancient Egyptians 46 archeological sites 46 ancient Romans 46 Achaemenid 45 olden 45 Babylonia 45 middens 45 fourteenth century 45 paleontological 45 cuneiform 45 frescos 45 Hohokam 45 cliff dwellings 45 stromatolites 45 fossils 45 dinosaur footprints 45 stone carvings 45 Egyptian pyramids 45 tombs 45 bas reliefs 45 Ancient Roman 45 Middle Ages 45 artefacts 44 radiocarbon dating 44 treasure troves 44 excavated 44 Zapotec