The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  1  2  4  1  1  0  1  1  0  1  1  1  1  1  2  1  2  1  1  0  2  1  1  1  1  1  1  2  4  2  2  4  1  2  1
 0  2  0  0  0  0  0  0  0  2  6  2  2  4  6  4  6  0  6  4  2  2  2  2  4  4  4  2  0  2  6  2  6  6  4  0  4  4  0  4  2  0  6  2  2  6  6  4  0  0  2  4  2  0  2  6  4  6  6  6  4  4  4  4  0  0  2  0  4  0
 0  0  2  0  0  0  2  6  2  2  2  4  2  4  2  6  4  0  0  0  4  2  2  0  6  4  2  6  6  4  0  6  4  0  0  6  0  0  4  6  2  0  6  2  2  0  4  4  6  2  6  4  4  4  6  2  6  6  6  6  2  6  6  0  6  2  4  0  6  2
 0  0  0  2  0  2  2  2  4  4  0  0  2  6  6  0  6  6  2  0  4  2  4  2  2  4  0  6  2  0  6  0  4  0  4  6  2  2  4  0  6  0  2  0  2  6  0  0  4  4  4  0  6  6  2  4  0  6  2  0  4  2  6  0  4  2  0  4  6  0
 0  0  0  0  2  2  4  6  2  4  2  2  6  4  0  4  6  2  4  0  6  2  6  2  4  2  2  0  6  0  0  0  0  4  6  0  4  6  2  6  0  4  6  6  2  4  6  0  2  2  0  6  0  4  4  2  2  4  0  0  6  6  2  2  4  0  6  2  4  2
 0  0  0  0  0  4  4  4  0  0  4  4  4  4  4  4  0  0  4  4  0  0  0  4  0  4  4  0  0  4  0  4  4  0  0  4  4  0  0  0  4  4  0  0  4  4  0  4  4  4  4  0  0  4  4  4  0  4  0  0  4  0  4  0  0  0  0  0  0  0

generates a code of length 70 over Z8 who´s minimum homogenous weight is 62.

Homogenous weight enumerator: w(x)=1x^0+200x^62+12x^63+262x^64+56x^65+459x^66+220x^67+449x^68+224x^69+499x^70+260x^71+435x^72+152x^73+301x^74+84x^75+178x^76+16x^77+149x^78+66x^80+44x^82+16x^84+12x^86+1x^108

The gray image is a code over GF(2) with n=280, k=12 and d=124.
This code was found by Heurico 1.16 in 6.11 seconds.