The generator matrix

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

generates a code of length 70 over Z8 who´s minimum homogenous weight is 61.

Homogenous weight enumerator: w(x)=1x^0+234x^61+731x^62+928x^63+1481x^64+1722x^65+2150x^66+2206x^67+2856x^68+2696x^69+2979x^70+2542x^71+2993x^72+2314x^73+2161x^74+1546x^75+1287x^76+760x^77+534x^78+308x^79+175x^80+78x^81+53x^82+20x^83+5x^84+2x^85+2x^87+2x^88+2x^89

The gray image is a code over GF(2) with n=280, k=15 and d=122.
This code was found by Heurico 1.11 in 16.1 seconds.