 The Coldrum Long Barrow , also known as the Coldrum Stones and the Adscombe Stones , is a chambered long barrow located near to the village of Trottiscliffe in the south @-@ eastern English county of Kent . Constructed circa 4000 BCE , during Britain 's Early Neolithic period , today it survives only in a ruined state . 
 The Coldrum Long Barrow , also known as the Coldrum Stones and the Adscombe Stones , <a href='drop_aux' title='1'><mark>is</mark></a>a chambered long barrow located near to the village of Trottiscliffe in the south @-@ eastern English county of Kent . Constructed circa 4000 BCE , during Britain <a href='null_genetive' title='2'><mark>'s</mark></a>Early Neolithic period , today it <a href='uninflect' title='3'><mark>survives</mark></a> only in a ruined state . 
The Coldrum Long Barrow , also known as the Coldrum Stones and da Adscombe Stones , a chambered long barrow located near to tdavillage of Trottiscliffe in thdaouth @-@ eastern English county of Kent . Constructed circa 4000 BCE , during Britain  Early Neolithic period , today it survive only in a ruined state .