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Introduction: Trench 21 (T21)

Tesoro trench 21 was originally excavated in 1978-1979 (see Albertson Bk I, which also contains Lyons & LacyÂ’s work in 1979). At the time T21 was originally excavated, it was on of several trenches designed to explore the area south of the upper building.

When the trench was originally laid out the grid within which it was located superceded previous grids used for test trenches Tesoro T6A & 6B (Gantz, Bk III) and T15 (MacIntosh Bk I & MacIntosh Bk II). At that time T21 was improperly located on the grid. Its original northwest corner was A 30. Now its northwest corner is A31 and its southwest corner is T31. Its northeastern corner is A37, but the east baulk runs along the 40 th meter of the grid. The squares A38-40 / D38-E40 and also P/Q 33-40 / T33-40 have not yet been excavated.

Work in T21 during this season has several goals. The first is to establish the chronological relationship between the Upper Building, the South Building (exposed by excavation of this trench in 1978-1979) and T22. The second goal is to reveal again the floor of the South Building and to excavate its southern portion along the line of the south baulk of T22 (I34-37). Excavating only part of the floor will reveal a section of the layers underneath it. It will also recover material useful in dating the building, and it will confirm whether there is a burn layer prior to the one exposed by excavation on this trench in 1978.

Because of the washout and weathering of the baulks, work will commence with 1-1.5m extensions of the southern and western baulks in order to re-establish the stratigraphy of the trench. The areas to be excavated include P/Q 33-40; U30-33; and A-U30. The excavation of P/Q33-40 will also confirm whether a north/south running wall on the eastern side of the South Building extends into the south baulk.

In this notebook certain definitions will be used to denote stones in soil layers.

Boulders: stones bigger than 10cm in diameter

Cobbles: stones 5-10cm in diameter

Pebbles: stones 1-5cm in diameter/length

Granules: stones of less than 1cm

Until Friday 9 July depth measurement in P/Q 34-40 and T31-33 were taken from the surface of the baulk. Thereafter a grid peg at R/40 was used. Its point of measurement was 15cm above the ground level.

For depth measurement in G-I/38-40 a peg at G/41 was used. The line was attached at 10cm above the surface of the ground.

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Suggested Citation

Alison Griffith. "AG I (1993-06-14):1-9; Introduction: Trench 21 (T21) from Italy/Poggio Civitate/Tesoro/Tesoro 21/1994, ID:388". (2017) In Murlo. Anthony Tuck (Ed.) . Released: 2017-10-04. Open Context. <>

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