MonaBlissa That Oak Tree looks like the Major Oak in Sherwood Forrest.
My avitar picture is me next to another Oak in Sherwood Forest
Oaks can grow massive. As an historian I came accros where I used to live (in another part of Sheffield) old records relating to the Oak Trees there. One called the Ladies Oak could shelter 200 horsemen under it's branches. Another was 13 feet in diameter near the roots!
They chopped one down around 1660 and two men on horseback stood either side of the fallen trunk and neither could see the tip of the others hat
They stood in Sheffield Park on the Manor Area. Now infamous for being one of the worst estates in the UK