Short Description:
Stone lined and capped drainage channel near large slab, Northern end of TR2W
Issued to
Ben Swain | 30/09/2022
Interpretation
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- A stone lined and capped drainage channel made of cut and split sandstone slabs. The channel itself is curvilinear, snakes around a large slab and goes on to truncate an earlier wall 2345 before the channel itself is truncated by grave F719. It is constructed in a box-culvert design and was most likely used to drain water - a dark rich silting fill (2428) was discovered within. It was set within a foundation trench containing a clean orangey clay that was likely used as a sealant to prevent the water from leaking away through the stones. Additionally, smaller fragments of sandstone slab have been set against the joints of the larger pieces in an overlapping pattern, assumedly to prevent further water leaking out. The channel survives predominantly within a hollow/depression in the ground into which most other features in this area also appear to have sunk. It is unlikely the channel was intentionally constructed within this depression as this would cause water to collect and pool within the drain at this low point, causing it to very quickly block up and probably leak/burst. As of the 2022 season, it is unclear from/to where this channel is draining water - further excavation in future years may reveal more.
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- Ben Swain
- 15-10-2022
Sketch Photo
- No Files Attached
Description
- Cut and split sandstone slabs
- Medium to large rectangular shaped
- cut rough around the edges, smooth finish where split across the sedimentary layers
- none
- A narrow curvilinear box-culvert channel
- Approximately N-S, but the channel snakes and curves around certain areas - such as a very large slab.
- none - only a clay sealant material below and either side of the channel (2429) to prevent water leaking
- L - 4.2 W - 0.24 T -