It was an enterprising descendent of Po and Lara who hit upon the idea of settling permanently at the crossroads and setting up a marketplace for the exchange of goods. Why should the salt traders transport their salt all the way to the mountains, when they need bring it only as far as the trading post, exchange it there for the goods they wanted, then head back to the mouth of the river for more salt?

A place that had been a crossroads became a destination and, for the handful of settlers at the trading post, a home. By acting as middlemen and providing accommodations for travelers, the settlers thrived.

The settlement of twenty or so huts was located at the foot of a steep cliff, where a broad, flat meadow beside the river offered easy access to the path and provided plenty of space for setting up the market. A seasonal stream, called the Spinon, cut through the meadow and emptied into the river, which men now called the Tiber.

The huts were round with a single large room, made of intertwined twigs and branches daubed with mud, with peaked roofs made of rushes and reeds. For a doorway, sturdy upright poles, in some cases elaborately carved, supported a wooden lintel; a flap of stitched animal skins provided a covering for the doorway. The huts, furnished with simple pallets for sitting or sleeping, were intended strictly for shelter from the elements or for privacy. All cooking and most social activities took place outside.

The marketplace, on the other side of the Spinon and nearer the river, consisted of a few thatched sheds for storing salt, pens for livestock, and an open area where traders could park their wagons and carts and offer their goods for sale. The livestock included oxen, cattle, swine, sheep, and goats. On any given day, the various commodities might include dyed wool, fur rugs, hats made of straw or felt, bags made of leather, clay vessels, woven baskets, combs and clasps made from tortoiseshell or amber, bronze ornaments and buckles, and axes and ploughshares made of iron.