Necropoli Delle Pianacce was first investigated by Guglielmo Maetzke in 1954, when two hypogea were unearthed, of which a large one, with a monumental access corridor of almost 30 m long, can be visited.
See:
- Alessandra Minetti, « La tomba della Quadriga Infernale di Sarteano » in Studi Etruschi LXX, 2004, pp. 135-159.