tunnels
Moles dig these
Tunnels are underground or underwater passages, typically constructed for transportation, utilities, or mining.
Roads and railways pass through mountain tunnels; subway systems run through urban tunnels.
The verb means to dig such a passage: They tunneled under the prison wall.
Figuratively, to tunnel through something is to work through it with narrow focus: She tunneled through the paperwork.
Tunnel vision describes this narrowed attention.
Subterranean insectivore
- badgerNag persistently
- rabbitLong-eared lagomorph
- gopherBurrowing North American rodent
- groundhogNorth American burrowing marmot
warren · den · excavate · dig · burrowing · vole · earthworm · rodent
Narrow vertical passage
- excavationAct of unearthing
- boreTiresome individual or drill
- drillingHole-making by rotation
- coalCombustible sedimentary rock
gold · ore · mineshaft · adit · drift · stope · ventilation · cave-in
Underground transit passage
- metroUrban rail transit
- sewerUnderground drainage pipe
- aqueductChannel conveying water distances
- pipelineLong-distance fluid transport tube
utility · cable · drainage · culvert · water main · storm drain · ventilation · shaft
Track system for trains
- trainRail vehicle or instruct
- railHorizontal support bar
- freightGoods being transported
- locomotiveRailway pulling machine
station · track · commute · transit · metro · express · junction · Chunnel
Enclosed connecting walkway
- passagewayEnclosed route between spaces
- walkwayPath for foot traffic
- footpathRoute for pedestrians
- gallerySpace for displaying artwork
arcade · thoroughfare · access · entrance · exit · pedestrian · connecting · crossing
Underground hollow in rock
- cavernLarge natural underground chamber
- lava tubeVolcanic drainage tunnel
- grottoSmall scenic cavern
- karstEroded soluble rock terrain
limestone · erosion · geological · spelunking · stalactite · stalagmite · river · sea cave
mole
Subterranean insectivore
groundhog · warren · den · excavate · dig · burrowing · vole · earthworm · rodent · foxhole
shaft
Narrow vertical passage
- excavationAct of unearthing
- boreTiresome individual or drill
- drillingHole-making by rotation
coal · gold · ore · mineshaft · adit · drift · stope · ventilation · cave-in · collapse
subway
Underground transit passage
pipeline · utility · cable · drainage · culvert · water main · storm drain · ventilation · shaft · underground
railway
Track system for trains
locomotive · station · track · commute · transit · metro · express · junction · Chunnel · underground
corridor
Enclosed connecting walkway
- passagewayEnclosed route between spaces
- walkwayPath for foot traffic
- footpathRoute for pedestrians
gallery · arcade · thoroughfare · access · entrance · exit · pedestrian · connecting · crossing · skyway
cave
Underground hollow in rock
karst · limestone · erosion · geological · spelunking · stalactite · stalagmite · river · sea cave · glacier
secret
Concealed information
- hiddenKept out of sight
- clandestineConcealed from authorities
- smugglingIllegal covert transport
POW · fugitive · border · concealed · covert · freedom · liberation · wartime · prison · evasion
- cavescave, cavern, caves, caverns, grotto
- infrastructurehighways, road construction, railway expansion, power grid, roads
- Burrowersaardvark, aardvarks, badger, badgers, gopher
- dog parkdog park, off-leash area, fenced area, dog run, play area
- driving hazardspotholes, black ice, debris, road debris, icy roads
- Gold RushCalifornia Gold Rush, gold miners, gold mining, gold flakes, gold nuggets
tunnelsbridges
Structures spanning obstacles
overpasses · viaducts · skyways · elevated railways · flyovers
tunnelshighways
Major intercity roads
surface streets · clearings · boulevards · esplanades · canals
- tunnel visionInability to see periphery
- light at the end of the tunnelIndication difficulties will end
- wind tunnelControlled airstream apparatus
- secret tunnelConcealed underground or walled route
- carpal tunnelWrist's nerve passageway
- underground tunnelsEnclosed routes below ground
tunnel, tunneled, tunneling, tunnelled, tunnelling, tunnellike, tunneler, tunnelers