The site of Yavne-Yam was excavated from the 1960s (Kaplan 1969:16; 1971:24) until rather recently (Taxel 2005). Excavations in 2007 east and southeast of the installation uncovered winepresses and tombs from various periods (Ajami and ‘Ad 2009).
The installation was found northwest of the northern corner of the rampart from the Middle Bronze Age and c. 10 m from the current shoreline. The surroundings consist of beach sand, which covered the installation, as well as a stretch of kurkar rocks and an abrasion platform on the shoreline west of the installation. The installation was not excavated, and only its upper part, which had been exposed by the action of the waves, was documented.
The outline of the installation is rectangular (c. 3.1 × 3.4 m; Figs. 2, 3). Its walls are built of small kurkar rocks bonded with gray bonding material which contains shell fragments. The inner face of the walls (width c. 0.5 m) was coated with three layers of plaster (each c. 1 cm thick). Each layer consisted of an inner layer of white plaster, which contains dark inclusions, and an outer layer of pink plaster (Fig. 4). The entire length of the installation’s western and southern walls was exposed, but only short segments of the eastern and northern walls were exposed; there may have been an opening in the western wall that led toward the sea. The inner corners of the installation were rounded, suggesting that it comprised an ovoid pool. The multi-layered plaster on the installation’s walls indicate that it was used to hold liquids.