— Accessibility
Accessibility statement
We want everyone to be able to use this website, including people with visual, hearing, motor or cognitive impairments.
Our standard
This website is designed to meet the Web Content Accessibility Guidelines (WCAG) 2.2 at level AA, and level AAA for text contrast.
What you can do
- Use the Display button at the top of every page to enlarge text, switch to high contrast or reduce motion. Your choice is remembered on this device.
- Zoom up to 400% without content being cut off or needing to scroll sideways.
- Navigate everything with a keyboard, with a visible focus outline and a “Skip to main content” link.
- Use a screen reader. Pages use clear headings, landmarks and descriptive image text, and the project map has a text alternative.
- Rely on your system settings: we respect reduced-motion preferences and Windows High Contrast.
Known limitations
Some project photographs include GPS stamps added by the camera app. The key details are repeated in the caption.
Feedback
If anything on this site is hard to use, email [email protected] and we will help and fix it.
Last reviewed: November 2026.