Subsoil Clay and Hidden Adarves

Calle Echeandía and its transverse blind alley are useful precisely because their origin is not completely settled. Their curved alignment appears on maps from 1712, and a municipal planning study considers these street forms possible survivals from before the planned Población del Rey of around 1200, perhaps with a Muslim origin. That remains a hypothesis, not a certainty. The archaeological context is firmer: research identifies the western suburb that later became San Pablo, together with the neighbouring Morería, as important pottery-production zones in Islamic Zaragoza. So the stop combines two different kinds of evidence: a documented craft landscape beneath this part of the city, and a street pattern whose deeper origin is plausible but still open to interpretation.