The Eildons are one of the supposed resting places of King Arthur and his Knights- a hidden cave or vault deep in the hills are where they sleep. Another tale relates to the hills as a gateway to the realm of the Faerie. Thomas the Rhymer, a 13th Century poet, is supposed to have been resting at the foot of these hills and met the Faerie Queen who took him into the heart of them;
‘He has gotten a coat of the even cloth,
And a pair of shoes of velvet green,
And till seven years were gane and past
True Thomas on earth was never seen.‘