Most of the Atlantic coast of the Aquitani was sandy and thin-soiled; it grew millet, but was unproductive with respect to other products. Along this coast was also the gulf held by the Tarbelli; in their land, gold mines were abundant. Large quantities of gold could be mined with a minimum of refinement. The interior and mountainous country in this region had better soil. The Petrocorii and the Bituriges Cubi had fine ironworks; the Cadurci had linen factories; the Ruteni and the Gabales had silver mines.