 view gallery |   Searchlight Cellar - San Diego, CA
in Cave Entrances (Artificial) A cellar which held a movable searchlight to illuminate suspicious boats entering San Diego Harbor. It was in use during WWI and WWII, but never was used for its intended purpose as no enemy ships were ever seen near the San Diego Harbor. posted by:  bluesnote location: California date approved: 9/15/2022 last visited: never |
 view gallery | Huel Lee - Berdorf, Luxembourg in Cave Entrances (Artificial) The "Huel Lee" is a man-made cave in the Luxembourg Sand stone. The circular marks on the rock walls are relicts from the time that millstones used to be extracted here. posted by: Walking Boots location: Luxembourg date approved: 9/15/2022 last visited: never |
 view gallery | Luftschutzbunker Rasselstein - Neuwied - Germany - Rhineland Palatinate in Cave Entrances (Artificial) A shelter found near the former steel-product-factory Rasselstein. posted by:  ColleIsarco location: Rheinland-Pfalz, Germany date approved: 9/15/2022 last visited: never |
 view gallery | Gouffre de Proumeyssac, Nouvelle-Aquitaine, France in Cave Entrances (Artificial) [FR] Gouffre sur la commune de Audrix [EN] Chasm in the commune of Audrix posted by: Blanko36 location: Centre-Val-de-Loire, France date approved: 8/29/2022 last visited: 8/29/2022 |
 view gallery | Big Bend Tunnel - Talcott W V in Cave Entrances (Artificial) The great tunnel of the C & O Railroad was started at Big Bend in 1870 and completed three years later. Tradition makes this the scene of the steel drivers' ballad, "John Henry" made popular by John Cash. posted by: Don.Morfe location: West Virginia date approved: 7/5/2022 last visited: 6/29/2022 |
 view gallery | Brindley Harecastle Tunnel South Entrance - Tunstall, Stoke-on-Trent, Staffordshire, UK in Cave Entrances (Artificial) The Brindley Harecastle Tunnel is a disused tunnel located on the Trent and Mersey Canal. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 5/30/2022 last visited: never |
 view gallery | Harecastle Tunnel South Entrance -Tunstall, Stoke-on-Trent, Staffordshire, UK in Cave Entrances (Artificial) The Harecastle Telford Tunnel south entrance is located on the Trent and Mersey Canal near Tunstall. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 5/30/2022 last visited: never |
 view gallery | Brindley Harecastle Tunnel North Entrance - Kidsgrove, Stoke-on-Trent, Staffordshire, UK in Cave Entrances (Artificial) The Brindley Harecastle Tunnel is a disused tunnel located on the Trent and Mersey Canal at Kidsgrove. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 5/30/2022 last visited: 6/2/2022 |
 view gallery | Harecastle Tunnel North Entrance - Kidsgrove, Stoke-on-Trent, Staffordshire, UK in Cave Entrances (Artificial) The Harecastle Telford Tunnel is located on the Trent and Mersey Canal at Kidsgrove. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 5/30/2022 last visited: 6/2/2022 |
 view gallery | Mønsted Kalkgruber - Mønsted, Danmark in Cave Entrances (Artificial) Mønsted Kalkgruber er verdens største kalkmine og der er 60 km underjordiske gange. posted by: Walking Boots location: Denmark date approved: 5/30/2022 last visited: never |
 view gallery | Ingang Dassenburcht - Dierenpark Amersfoort - Amersfoort, NL in Cave Entrances (Artificial) The artificially made Dassenburcht (badgers habitat) is one of the attractions of Dierenpark Amersfoort posted by: Becktracker location: Utrecht, Netherlands date approved: 5/30/2022 last visited: 6/12/2022 |
 view gallery | Dana Point Elevator - Dana Point, CA in Cave Entrances (Artificial) One of many historical markers in Dana Point, California. posted by: bluesnote location: California date approved: 3/30/2022 last visited: never |
 view gallery | Former Copper Mine - Swainsley, Manifold Valley, Staffordshire, UK in Cave Entrances (Artificial) The former copper mine is located at Swainsley near Ecton in the Manifold Valley. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 2/20/2022 last visited: 2/21/2022 |
 view gallery | Mergelrijk - Valkenburg, NL in Cave Entrances (Artificial) In the past Marlstone (Mergel) was mined in Limburg. Marlstone is a soft yellowstone, which is ideal for sculpting. The mines are no longer used, but you can enter the caves/mine area which has been transformed into a museum of art and sculpting. posted by: T-Team! location: Limburg, Netherlands date approved: 2/20/2022 last visited: never |
 view gallery | Leek Tunnel North East Entrance - Leek, Staffordshire, UK in Cave Entrances (Artificial) The Leek Tunnel is located on the Leek Branch of the Caldon Canal in Staffordshire. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 2/20/2022 last visited: never |
 view gallery | Frontierland Tunnel - Anahiem, CA in Cave Entrances (Artificial) A train tunnel at Frontierland station in Disneyland. posted by: bluesnote location: California date approved: 2/20/2022 last visited: never |
 view gallery | Froghall Tunnel North East Entrance - Froghall, Staffordshire, UK in Cave Entrances (Artificial) Froghall Tunnel is located on the Caldon Canal at Froghall. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 1/16/2022 last visited: never |
 view gallery | Grot in Sonsbeek park - Arnhem, NL in Cave Entrances (Artificial) Grot bij de grote waterval in Sonsbeekpark posted by: PetjeOp location: Gelderland, Netherlands date approved: 1/16/2022 last visited: 1/16/2022 |
 view gallery | Rode Hall Ice House - Scholar Green, Cheshire, UK. in Cave Entrances (Artificial) The ice house is located in the grounds of Rode Hall, an 18th century country house on Church Lane in Scholar Green. posted by: Poole/Freeman location: North West England, United Kingdom date approved: 12/18/2021 last visited: never |
 view gallery | Chesterton Memorial Park Ice House - Chesterton, Newcastle under Lyme, Staffordshire, UK in Cave Entrances (Artificial) The ice house is located in Chesterton Memorial Park, a public park located on London Road in the former mining village of Chesterton. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 12/18/2021 last visited: never |
 view gallery | Froghall Tunnel South West Entrance - Caldon Canal, Froghall, Staffordshire, UK in Cave Entrances (Artificial) Froghall Tunnel is located on the Caldon Canal at Froghall. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 12/6/2021 last visited: never |
 view gallery | Leek Tunnel South West Entrance - Leek, Staffordshire, UK in Cave Entrances (Artificial) The Leek Tunnel is located on the Leek Branch of the Caldon Canal. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 12/6/2021 last visited: never |
 view gallery | Caves troglodytiques - Chançay, France in Cave Entrances (Artificial) [FR] Caves troglodytiques dans Chançay (FRA). [EN] Troglodyte caves in Chançay (FRA). posted by: ipln location: Centre-Val-de-Loire, France date approved: 11/26/2021 last visited: 11/26/2021 |
 view gallery | Swainsley Tunnel - Former Leek and Manifold Valley Light Railway - Staffordshire, UK in Cave Entrances (Artificial) The Swainsley Tunnel is a single track tunnel, that was constructed for the former Leek and Manifold Valley Light Railway that ran between Ecton and Wetton in the Staffordshire Peak District. posted by: Poole/Freeman location: West Midlands, United Kingdom date approved: 11/26/2021 last visited: 11/26/2021 |
 view gallery | Trøgstad Fort - Trøgstad, Norway in Cave Entrances (Artificial) 1.3 km of dug and blasted tunnels in the rocks under Trøsgtad Fort posted by: Walking Boots location: Viken, Norway date approved: 9/25/2021 last visited: never |
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