The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+91x^60+404x^61+583x^62+1024x^63+1359x^64+1738x^65+1835x^66+2584x^67+2353x^68+2968x^69+2916x^70+2974x^71+2405x^72+2644x^73+1916x^74+1706x^75+1217x^76+946x^77+507x^78+296x^79+100x^80+88x^81+45x^82+20x^83+23x^84+10x^85+6x^86+2x^87+3x^88+2x^89+2x^91

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.