Quartiere XX Ardeatino, sector B, on Tavola 42a, with the Tre Fontane abbey at the left edge and the hilly open land south of Via Ardeatina.
Source: Old map, public domain
Hachured hills dominate, with the name Abbazia delle Tre Fontane at the lower left and Grotta Perfetta and Campi Sperimentali lettered on small sites. Large outlined zones numbered 42 to 44 in orange and tan mark parcels beside the abbey, and Zona XXII Cecchignola is named at the foot.
