The generator matrix

 1  0  0  0  1  1  1  2  1  1  6  0  2  1  1  4  1  0  1  1  1  4  6  1  1  1  2  6  1  2  4  2  4  1  6  0  1  1  0  1  1  1  1  1  4  4  2  1  1  1  1  0  4  4  1  4  1  6  1  1  1  4  2  0  1  2  6  6  2  1
 0  1  0  0  2  1  3  1  4  7  1  1  4  1  6  1  5  1  6  1  2  1  6  4  7  2  1  1  1  6  2  1  2  6  1  2  1  7  1  2  3  5  6  1  0  1  1  4  1  7  7  2  1  4  7  1  3  0  6  0  4  4  1  0  2  1  1  4  1  0
 0  0  1  0  0  0  0  4  5  5  7  5  1  7  5  0  2  3  5  7  2  4  1  7  4  0  2  2  7  1  2  7  1  0  5  1  1  2  7  3  6  1  7  4  1  6  3  3  7  6  3  6  4  1  0  5  3  0  5  5  0  1  1  6  7  7  5  1  6  0
 0  0  0  1  1  3  6  5  5  7  0  1  7  0  4  6  1  7  2  7  6  1  7  7  0  7  7  6  2  2  1  2  0  6  4  3  0  5  2  4  0  1  5  6  1  3  7  5  5  6  2  1  7  2  5  7  3  1  1  5  1  7  6  1  3  4  2  5  1  0
 0  0  0  0  4  0  0  0  0  0  0  4  4  4  4  4  4  0  0  4  4  4  0  4  0  4  0  4  0  0  0  4  4  4  0  4  0  4  4  0  4  4  0  4  0  0  0  4  0  0  0  0  4  4  0  4  4  4  0  0  0  4  0  4  4  4  4  0  4  0
 0  0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  0  0  4  4  4  4  0  4  0  4  4  4  4  0  0  4  0  4  4  4  0  0  0  0  4  4  0  0  4  4  0  4  4  4  4  0  4  4  0  0  4  4  0  4  0  0  4  0
 0  0  0  0  0  0  4  4  0  4  4  4  0  4  0  4  4  0  4  0  4  0  0  0  0  4  0  0  4  0  4  4  0  0  4  4  0  4  0  0  4  4  4  0  4  0  4  0  0  0  0  4  0  4  4  4  4  0  0  0  4  0  0  4  4  0  4  4  4  0

generates a code of length 70 over Z8 who´s minimum homogenous weight is 60.

Homogenous weight enumerator: w(x)=1x^0+98x^60+332x^61+655x^62+864x^63+1329x^64+1808x^65+2289x^66+2158x^67+2871x^68+2488x^69+3002x^70+2730x^71+2899x^72+2164x^73+2257x^74+1582x^75+1209x^76+776x^77+575x^78+318x^79+152x^80+108x^81+43x^82+28x^83+13x^84+4x^85+8x^86+3x^88+3x^90+1x^92

The gray image is a code over GF(2) with n=280, k=15 and d=120.
This code was found by Heurico 1.16 in 37.2 seconds.