Related by context. Frequent words. (Click for all words.) 45 bedrock 39 talus 37 deep 37 excavated 36 cement slab 36 excavations 36 sandstone 36 caissons 35 trenched 35 silty 35 concrete piers 35 fissures 34 limestone 34 limestones 34 foundations 34 mud 34 pebbled 34 pea gravel 34 feet 34 sediment 34 stone 34 sandy 34 beneath 34 sediments 33 basalt 33 dug 33 flagstones 32 sedimentary rock 32 trod 32 excavation 32 gingerly 32 footings 31 trench 31 dig trench 31 rocks 31 volcanic rock 31 boggy 31 ruts 31 digging trench 31 tunneled 30 underneath 30 concreted 30 overlying 30 stony 30 thick layer 30 cored 30 pillars 30 borings 30 diggings 30 alluvium 30 andesite 30 excavate 29 friable 29 moraine 29 rutted 29 quicksand 29 muck 29 puddled 29 hole 29 relaid 29 dolomite 29 stonework 29 chipped 29 concrete 29 retaining walls 29 brittle 29 tunnelled 28 barefoot 28 schist 28 granite 28 freshly dug 28 lakebed 28 sands 28 pilings 28 retaining wall 28 cobblestone 28 buttresses 28 dug trench 28 dirt 28 outcroppings 28 shallow 28 tunnels dug 28 soil 28 crevices 28 earthen 28 sloping 28 planks 27 pillar 27 toe 27 shallower 27 rocky 27 sinkhole 27 concrete slab 27 drilled 27 chert 27 compacted 27 siltstone 27 archaeologists 27 excavating 27 jutted 27 gurgled