The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+252x^61+634x^62+1066x^63+1331x^64+1926x^65+1902x^66+2552x^67+2521x^68+2966x^69+2682x^70+3026x^71+2499x^72+2420x^73+1931x^74+1890x^75+1215x^76+916x^77+421x^78+276x^79+165x^80+94x^81+43x^82+22x^83+10x^84+2x^85+3x^86+2x^92

The gray image is a code over GF(2) with n=280, k=15 and d=122.
This code was found by Heurico 1.16 in 35.7 seconds.