What are the top free Environmentalism Events happening in Hemel Hempstead?
Here are the top free Environmentalism Events in Hemel Hempstead:
- River of Light - Lantern Parade - Hemel - 14th March '26 - 5-7:30 is happening on Sat 14 Mar 2026 from 5:00 PM onwards at Marlowes, Hemel Hempstead
- Riverfly Day 2026 is happening on Sat 25 Apr 2026 from 11:00 AM onwards at Box Moor Trust Centre, Hemel Hempstead
