Because pre-Angkorian sanctuaries were traditionally built of brick, the original 7th-century structure no longer stands; however, two fine sandstone lintels survive on-site as diagnostic evidence: Inward-Facing Makaras: Both lintels feature mythic aquatic creatures at their outer edges facing inward, each bearing a small rider. Sagging Arch & Medallions: A lowered arch spans between the makaras, holding round medallions with carved figures, framed by regular festoons, garlands, and dangling pendants underneath. Iconography: One lintel (located inside the sanctuary) depicts a clear bull's head inside a medallion—most likely Nandin, the vehicle of Śiva. This suggests the original pre-Angkorian site was a Śaiva hilltop sanctuary. The second lintel (located outside) features seated figures and a central rider on an eroded mount. Phase II: The Intermediary Period (8th–10th Centuries) No standing structures or securely dated artifacts can be definitively assigned to these intermediate centuries. However, the presence of various uncatalogued lintel fragments and decorated pedestals hints that the site remained active. A complete systematic survey of all loose site stones is necessary to fully document this era. Phase III: Angkorian Reconstruction (11th–12th Centuries) The standing visible architecture on Phnom Srei reflects a major rebuilding project during the classical Angkorian period: Sanctuary Layout: The main tower is a square laterite sanctuary featuring a single interior chamber with active doorways on both the east and west (omitting the usual false doors). The eastern doorway was originally preceded by a brick forebody with pillars, flanked by turned-baluster stone windows. A secondary, small square laterite chamber sits just to the south, opening to the east. Enclosure: The layout featured an outer enclosure wall supported by northern and southern peristyle galleries and a western chambered entrance gopura. Style & Dating: The central lintel depicts a prominent central Kāla (monster mask) crowned by a deity, with foliage branches forming wide downward loops. The absence of makaras and medallions places this carving squarely in the Baphuon to Angkor Wat styles (mid-11th to mid-12th century). Lifting Holes: Many laterite blocks exhibit round transport holes—a quarrying technique heavily associated with large-scale late 12th-century construction (Jayavarman VII era)—suggesting continued building or repair work into the early 13th century.