cavelike, sepulchers, duomo, skylit, hypogeum, crypt, sarcophaguses, apse, cavern, tombs, necropolis, romanesque architecture, tumulus, cloisters, dungeon, frescoes, caryatids, oculus, cruciform, naves, dank, megaliths, bargello, ramesses, rabbit warren, stalactite, babylonian captivity, crenellations, warren, porticoes, antechamber, vitrine, rood screen, iconostasis, dolmen, ziggurat, stabiae, conciergerie, edessa, aquileia, grotto, subbasement, garret, undercroft, tabernacles, baldachin, jugendstil, triumphal arch, lunette, mandylion, masaccio, metopes, ptolemaic, labyrinth, aksum, transepts, musty, reliquary, sakkara, revenant, alcove, minoan civilization, lascaux, sistine chapel, ctesiphon, gaslights, herakleion, stele, stela, friezes, basement, scriptorium, leptis, louis xvii, henge, domes, knossos, golgotha, eldritch, cathedral, romanesque, basilica, cupolas, charnel house, pediments, sheol, ducal, baptismal font, mamilla, loggia, narthex, grisaille, herodian, kiva, passageways, ramses ii, archway, diocletian, altarpieces, postholes, octagons, mihrab, catacombs, cave, cellar, aqueduct, tomb, lake, synagogue, temple, sanctuary, tunnel, wharf, bunker, hall, mosque, pond, quarry

tunnel