When the sun goes down, it's time get out there with these outdoor challenges. Grab a torch and a grown-up and try stargazing, bat-watching and hunting for glow worms. Discover how to tell the time with the moon and send secret messages with Morse code. Can you complete all 50?

Founded to preserve and provide access to places of natural beauty or historical significance, the National Trust is one of the world¿s leading conservation organisations dedicated to preserving Britain¿s landscape. From ancient forests to historic houses and gardens, the Trust looks after more than a quarter of a million hectares of land, including over 770 miles of coastline and thousands of archaeological monuments across England, Wales and Northern Ireland.