The seasons are a-changing and before you know it we'll be surrounded by autumn colour. For this week's #NTChallenge, we want to see the *first signs of Autumn*. Together with @CotswoldOutdoor, we're getting ready for some refreshing walks in nature. To take part, just add the #NTChallenge hashtag to your photos from today until Monday. Only photos uploaded to Instagram are eligible - any photo taken and tagged is eligible to be posted (along with the copy) on our Instagram channel and our other social channels; like Twitter, Facebook and Tumblr. Watch out on Monday for the winner and runners up. No prizes, this one’s just for fun! We'll kick things off with this view from the woods at Wallington, Northumberland by Chris Lacey. #NationalTrust