A public record of the stone in your built environmentExplore the mapBrowse all locationsFor researchersAbout the project
London Pavement Geology — home
Submit a location

Now extended for the rest of the UK

  • Explore
    • Map of all sites
    • Search Locations
  • Browse
  • Submit a Location
  • About
    • About this project
    • Project History
    • Further Reading
    • Useful Links
    • Mobile App
  • Contact

Categories

AllIgneousMetamorphicSedimentaryFossilStructure
 
 
 

Home/Explore the map/Browse A–Z: C

Caernarfon Old Library

Cefn Sandstone

  • Sedimentary
  • Sandstone
  • Upper Carboniferous

This stone is older than it looks. Send it to someone five minutes away.

  • WhatsApp (opens in a new tab)
  • Bluesky (opens in a new tab)
  • X (opens in a new tab)
  • Facebook (opens in a new tab)
  • Email

See the message

Just found Cefn Sandstone in Caernarfon Old Library.

Upper Carboniferous sandstone, quarried at Ruabon, Denbighshire, Wales. Nearest stop: Bangor.

This stone is older than it looks — worth five minutes if you're nearby.
https://www.londonpavementgeology.co.uk/location/3303-caernarfon-old-library/

Location Details

Back to Map

Location of Geological Feature
Main building stone.
Rock Type
Sandstone
Geological Age
Upper Carboniferous
Quarry Location
Ruabon, Denbighshire, Wales
Category
Sedimentary
Nearest station
Bangor
Address
Allt Pafiliwn LL55
Date of build
1884
Find out more
Stone identified by Ruth Siddall
Caernarfon Old Library — Cefn Sandstone
Cefn Sandstone at Caernarfon Old Library
Cefn Sandstone at Caernarfon Old Library (detail 2)
Cefn Sandstone at Caernarfon Old Library (detail 3)
    Entry submitted by Ruth Siddall

Nearby

The closest other recorded buildings.

  • Barclays Bank, BangorVerdi Alpi20 m · about 1 min walk
  • Slate wallSpotted Slate30 m · about 1 min walk
  • W. Williams JonesLarvikite: Marina Pearl30 m · about 1 min walk
  • Corbett BookmakersLarvikite: Marina Pearl50 m · about 1 min walk
  • Caernarfon LibraryPenmon Limestone60 m · about 1 min walk
  • Mantell Gwynedd Volunteering CentreLarvikite: Emerald Pearl90 m · about 1 min walk

Suggest an Edit


London Pavement Geology

A public record of the stone in your built environment.

Like the site? Buy us a coffee

Explore

Map of all sitesSearch locationsBrowse every location

Contribute

Submit a locationContact us

About

About this projectProject historyFurther readingUseful links

Funding, sponsorship and supporting institutions

  • Marelambis Ltd.
  • University College London
  • Petroleum Exploration Society of Great Britain
  • Geologists' Association Curry Fund
  • Geoscience Wales
  • The Geological Society
  • London Geodiversity Partnership

With donations from individuals in the oil and gas industry who wish to remain anonymous.

Building stone data by Ruth Siddall, Dave Wallis and contributors. Project founded by Dave Wallis.

Privacy policyCookie policyTerms© 2026 London Pavement GeologyWeb design by Livetech

We would like to use Google Analytics to see which pages people find useful. It sets cookies in your browser, so we only do it if you say yes. Nothing about you is identified individually. What we use and why.