The Big Hedgehog Map is a mini campaign site that was built to accompany the Hampton Court flower Show garden built by People’s Trust for Endangered Species (PTES), British Hedgehog Preservation Society (BHPS).

The Big Hedgehog Map is a mini site that evolved out of an hedgehog awareness campaign. The site enables people to pledge to make a hole in a garden for hedgehogs, Map the hole they have made in their garden, add a hedgehog sighting and donate to the project.

The map can be filtered using a number of filters and using the Google maps clustering tool enables groups of markers to be grouped together.