- Building type: Tunnel
- Date of construction: c1850
- Architect: Not Assigned
- Listing: B
- HB/SMR Ref: HB03/12/031
- 2nd Survey by EHS: No
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Railway Tunnel and Entrance Arches, Castlerock
County Londonderry
Rounded arch entrance railway tunnel, built in coursed basalt with rock-faced voussoirs, splayed at base
| Stone Type Category: | Basalt |
| Primary Stone Type: | Basalt |
| Secondary Stone Type: | |
| Other Stone Type: | |
| Replacement Stone Type: | |
| Stonework Construction: | Un-coursed rubble |
| Stonework Condition: | Stonework is in good condition with some localised areas of biological soiling |
| Condition Assessment (QUB): | 1 |
