 Radiocarbon dating of the remains suggested Early Neolithic activity began at the site during 3980 – 3800 calibrated BCE ( 95 % probability ) or 3960 – 3880 cal BCE ( 68 % probability ) , when the first human remains were buried at the site . It then suggested that after an interval of either 60 – 350 years ( 95 % probability ) or 140 – 290 years ( 68 % probability ) , further depositions of human remains were made inside the tomb . This second phase probably began in 3730 – 3540 cal BCE ( 95 % probability ) or 3670 – 3560 cal BCE ( 68 % probability ) . The radiocarbon dating of the human remains does not provide a date for the construction of Coldrum Long Barrow itself ; it is possible that the individuals died either some time before or after the monument 's construction . 
 Radiocarbon dating of the remains suggested Early Neolithic activity began at the site during 3980 – 3800 calibrated BCE ( 95 % probability ) or 3960 – 3880 cal BCE ( 68 % probability ) , when the first human remains <a href='uninflect' title='1'><mark>were</mark></a> buried at the site . It then suggested that after an interval of either 60 – 350 years ( 95 % probability ) or 140 – 290 years ( 68 % probability ) , further depositions of human remains <a href='uninflect' title='2'><mark>were</mark></a> made inside the tomb . This second phase probably began in 3730 – 3540 cal BCE ( 95 % probability ) or 3670 – 3560 cal BCE ( 68 % probability ) . The radiocarbon dating of the human remains <a href='uninflect' title='3'><mark>does</mark></a> not provide <a href='None' title='4'><mark>a</mark></a><a href='negative_concord' title='5'><mark>date</mark></a> for the construction of Coldrum Long Barrow itself ; it is possible that the individuals died either some time before or after the monument <a href='null_genetive' title='6'><mark>'s</mark></a>construction . 
Radiocarbon dating of the remains suggested Early Neolithic activity began at da site durin 3980 – 3800 calibrated BCE ( 95 % probability ) or 3960 – 3880 cal BCE ( 68 % probability ) , when the first human remains was buried at the site . It then suggested that after an interval of either 60 – 350 years ( 95 % probability ) or 140 – 290 yrs ( 68 % probability ) , further depositions of human remains was made inside the tomb . dis second phase probably began in 3730 – 3540 cal BCE ( 95 % probability ) or 3670 – 3560 cal BCE ( 68 % probability ) . Tdaradiocarbon dating of the human remains do not provide no date fir the construction of Coldrum Long Barrow itself ; it is possible that the individuals died either some time before or after the monument  construction .