- thelittlehouseofhorrors.com edinburgh-castle/The castle overlooks the old town of Edinburgh. Castle Rock was inhabited as early as the Iron Age, but didn’t become a fortification until 600 AD.
- wikishire.co.uk wiki/Castle_Rock,_EdinburghOn the rock, and covering the whole top and slope of the rock, is Edinburgh Castle. Geologically, the hill is a volcanic plug.
- wildwalks.com bushwalking-and-hiking-in-nsw/blue-…Analysis and summary of the altitude variation on the Edinburgh Castle Rock. Overview of this walks grade – based on the AS 2156.1 – 2001.
- WikiMili.com en/Castle_Rock_(Edinburgh)Edinburgh Castle is a historic fortress which dominates the skyline of Edinburgh, the capital city of Scotland, from its position on the Castle Rock.
- edinburghgeolsoc.org geological-site/castle-rock/Castle Rock, a volcanic plug formed in the Carboniferous period (340 million years), towers above Edinburgh’s Old Town and West Princes Street Gardens...
- britannica.com place/Edinburgh-CastleIt stands 443 feet (135 metres) above sea level and overlooks the city of Edinburgh from a volcanic crag called Castle Rock.
- allaboutedinburgh.co.uk edinburgh-castleThe Scottish National War Memorial is a building in Crown Square which is at the height of Edinburgh Castle rock on which Edinburgh Castle stands.
- aboutbritain.com EdinburghCastle.htmEdinburgh Castle is the city’s iconic building - it towers over Edinburgh from Castle Rock as it has done for nearly a thousand years.
- The closest train station to Castle Rock Hostel is Edinburgh Waverley, it is placed within 15 minutes' walk.
- edinburghcastle.co.uk history/Edinburgh Castle is situated on Castle Rock in the city of Edinburgh, Scotland. Castle Rock formed after a volcano erupted over 340 million years ago.