Overview
A keyhole-shaped shaft cut into the bedrock opens into a broad, barrel-vaulted stepped tunnel that descends steeply to a natural cave holding groundwater. Macalister cleared it over more than a month and published it as the 'Water-passage' (Excavation of Gezer I, 1912, pp. 256-265).
Macalister found only a few stray objects in the silt, noted flint-tool marks on the upper walls, and found no inscription. From the Late Bronze ('Third Semitic') material that closed the entrance and the worn state of the steps, he dated the cutting to about 2000 BCE at the latest and attributed it to the Canaanite city.
The tunnel was re-exposed and dug deeper in 2010-2018. The excavators date it to Middle Bronze IIB (c. 1750-1650 BCE), state that there was no exit from the system, and report finds they read as cultic and calendrical; their final report is The Canaanite Water System at Gezer (2025).
What the evidence shows
- Keyhole-shaped entrance pit, 34 ft 6 in long, 7 ft 5 in wide at north end and 14 ft 6 in at south; steps cut in its floor (Macalister I, p. 258).
- Tunnel entrance 'an imposing archway, 23' high and 12' 10" broad'; steps across the full width; barrel-vaulted roof (Macalister I, p. 259).
- Water stood 94 ft 6 in vertically below the rock surface, about 130 ft below the ground surface at the time of excavation; 200 gallons drawn off did not lower it (Macalister I, p. 261).
- The tunnel ends in a natural cave c. 80 x 28 ft; Macalister found no second opening (pp. 261-262).
- 'No trace of an inscription of any sort was observed' (Macalister I, p. 262).
- 2015 season: pottery showed 'a clear transition from Late Bronze Age pottery to Middle Bronze Age pottery dating between 1800 and 1500 B.C.' (Warner, quoted by BAS).
Open questions
- Date: Macalister (1912) placed it c. 2000 BCE at the latest because Late Bronze silt sealed it and the steps were heavily worn; Dever (as reported by BAS 2015) had suggested Late Bronze or Iron Age; Warner, Yannai and Tsuk (2010-2018 excavations; final report 2025) date it to MB IIB from the ceramic sequence in the fill. The fill dates the tunnel's disuse; the construction date is inferred from what lies beneath it.
- Purpose: Macalister thought it was begun as a siege exit and struck the spring by accident, because a vertical well would have been shorter by about 3 to 5; Père Vincent (in Macalister's note) held it was cut for water from the start. The 2025 report adds a cultic/calendrical reading of finds (reported by Pathway, Oct 2025); the finds themselves have not been examined for this entry.
Since 2024
- 2025Final report The Canaanite Water System at Gezer (Tsuk, Yannai, Warner, Cole, Parker) published: MB IIB date (c. 1750-1650 BCE), no exit from the system, finds read as cultic/calendrical. [3]
- 2025-10Press coverage of the book, quoting Parker on the MB IIB date and the Josh 10 connection. [4]
Sources
- R. A. Stewart Macalister, The Excavation of Gezer 1902-1905 and 1907-1909, vol. I (London: John Murray for the Palestine Exploration Fund, 1912), pp. 256-265 ('The Water-passage'). link excavation report
- "Tel Gezer Water System Built by Canaanites?" Bible History Daily, Biblical Archaeology Society, 19 Nov. 2015. link study
- Tsvika Tsuk et al. (with Eli Yannai, Daniel Warner, Dennis Cole, Jim Parker), The Canaanite Water System at Gezer (Israeli Institute of Archaeology / Israel Nature and Parks Authority, 2025). link excavation report
- "New book on Tel Gezer dig offers clues on the day when sun, moon stood still for Joshua," The Pathway (Missouri Baptist Convention), 2 Oct. 2025. link study
- Ronny Reich and Eli Shukron, "Notes on the Gezer Water System," Palestine Exploration Quarterly 135.1 (2003): 22-29. doi:10.1179/peq.2003.135.1.22 link study
Corrected from the earlier edition of this page
- Old entry: a Solomonic-era project showing 'the organizational prowess of the United Monarchy'. Macalister himself dated it c. 2000 BCE at the latest (1912, p. 262), and the 2010-2018 excavators date it to MB IIB, c. 1750-1650 BCE. It is Canaanite, centuries before Solomon.
- Old entry: 'length of approximately 100 meters and a depth of up to five meters'. Macalister measured the water 94 ft 6 in (c. 28.8 m) vertically below the rock surface; the arch is 23 ft (c. 7 m) high; BAS gives the shaft as c. 138 ft (c. 42 m) long.
- Old entry: 'a series of interconnected tunnels, chambers, and channels'. Macalister describes one entrance pit, one stepped tunnel, and one natural cave with no further opening.
- Old entry: 'critical component of Gezer's defense'. This is an interpretation; Macalister's siege-exit idea and the 2025 cultic reading are both readings, not observations.
- Old entry cites 1 Kgs 10:26 and 2 Chr 8:1; neither concerns Gezer's water.
Checked against new publications through 2026-09.