Related by context. Frequent words. (Click for all words.) 66 henge 63 stele 59 steles 59 burial mounds 58 Stupa 57 Neolithic 57 stalactite 57 excavated 57 royal tombs 57 neolithic 56 medieval fortress 56 archeological excavations 56 Harappan 56 stupa 56 Iron Age 56 Elamite 56 Parthian 56 stupas 56 Bronze Age 55 Sassanid 55 palisade 55 amphorae 55 flint tools 55 megalithic 55 cairns 54 Thracian 54 Palaeolithic 54 ancient 54 Mycenaean 54 limestone cave 53 Harappa 53 tombs 53 #BC [003] 53 trackway 53 Visoko 53 Tang Dynasty #-# 53 Hatra 53 stone slabs 53 Ancient Roman 53 lava tubes 53 megaliths 53 Dmanisi 52 Radiocarbon dating 52 stone arches 52 Inca Empire 52 Herodium 52 cairn 52 Newgrange 52 Roman Baths 52 Yuan Dynasty 52 Mesolithic 52 midden 52 Qing dynasties 52 relict 52 archeological 51 heiau 51 trackways 51 limestone caves 51 #BC [002] 51 Ming Dynasty #-# 51 thirteenth century 51 landform 51 pre Incan 51 Atapuerca 51 stone slab 51 obelisks 51 Axum 51 Gyeongbok Palace 51 primeval forest 51 elaborately carved 51 middens 51 terracotta army 51 fourteenth century 51 archaeological 51 archaeological finds 51 ironstone 50 Akkadian 50 archaeologically 50 #AD [002] 50 equestrian statue 50 Uruk 50 necropolis 50 Jiroft 50 Achaemenid 50 horned dinosaur 50 Egyptian pyramids 50 marble sculptures 50 Patara 50 promontory 50 Tarim Basin 50 archaeological excavations 50 Jinsha 50 excavations 50 hillocks 50 Stonehenge 50 grottos 50 granite stones 50 bas relief 50 Minoan 50 intricately decorated 50 carnivorous dinosaur