While working up preliminary study of MAP's hyrdraulic system and reviewing final phasing, interpretations on this drain have changed. Inititally, excavators identified two separate drains. A ditch filled with stone & tiles covering a lower/earlier stone channel. It is not believed that these drains are part of the same french drain construction: a ~1m-wide ditch was dug (20103 = 20109 = 20031), cutting the cocciopesto surface of Room D as well as the back wall (20018) and conduit (20030 = 20038) north of the backwall. Then a stone channel was built at the bottom (20105) covered with large stones. Finall the ditch was backfilled with stones and tiles (20111 = 20102 = 20032) to create a soakaway that directed water into the channel. This drain was built after the winery went out of use but before the fire event since the drain is covered with collapsed wall construction material (20099).

Linear cut of “Drain 2” filled with 20105 (stone feature,) 20111 & 20112 (fills.) The eastern side was destroyed by Cut 20103. This cut is most likely of a drain due to the lining of stones and covering. - EBS