From the Greek κρυπτή (kryptḗ); in the description of the Nile barge of Ptolemy IV, transmitted in Athenaeus 5, 205a, it designated a closed walkway lit by windows. In Lat. texts cryptoporticus could cover various items of architecture such as cellars (Vitr. De arch. 6, 8), vaults (Juv. 5, 106) or even subterranean, vaulted cult or grave structures. In modern archaeological terminology the term cryptoporticus is used synonymously with crypta; this compound word from crypta and porticus that comes to us only from Pliny (Ep. 2,17,20; 5,6,27f.; 7,21,2) and …