[SunkenCiv]

The jars were cheap, and were labeled, and so didn't get reused too often, except as ostraca (the ancient world's Post-Its™). The systematic way of stacking them suggests that this was the mandatory trash site, the town dump as it were.

[Larry Lucido]

The probably experimented with an amphora deposit. Of course, someone had to game the system. No doubt named Kramericam and Newmanium.