The generator matrix

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

generates a code of length 67 over Z8 who´s minimum homogenous weight is 58.

Homogenous weight enumerator: w(x)=1x^0+197x^58+594x^59+982x^60+1388x^61+1754x^62+2008x^63+2407x^64+2796x^65+2921x^66+2942x^67+2947x^68+2690x^69+2365x^70+2096x^71+1553x^72+1232x^73+882x^74+462x^75+281x^76+144x^77+67x^78+24x^79+19x^80+4x^81+4x^82+2x^83+2x^84+2x^85+2x^86

The gray image is a code over GF(2) with n=268, k=15 and d=116.
This code was found by Heurico 1.16 in 33.6 seconds.