An interesting image for the llaneros. Bright sunlight in Nostromo corresponds to disillusionment, while blackness corresponds to deepest subjective isolation, suggesting that idealistic purpose has been burned out of the troops, leaving only personal desires of plunder.

There is something heroic in these hard, simple men who have crossed the symbolic mountains for plunder, another indication that Conrad sees primitive, straightforward greed as hardier and more innocent than its refined, overly idealized counterpart.