Britain's OpenGeoscience

Our colleagues at the British Geological Survey continue to set the bar higher. The release of OpenGeoscience last week got a months worth of visitors in a single day with over 10 million image hits and 300,000 page views.

The BGS announcement describes it as

The site provides the world’s first open-access supply of street-level geological mapping for a whole country - better than 50m resolution - with on-the-fly viewing of bedrock and superficial geology overlaid on street maps and aerial photography. The web map service (WMS) provides access to 1:50,000 scale geological mapping for mash-up use (allowing access via OneGeology) and has open access to 50,000 photos, databases, educational resources, reports and software.