In 1974 a foreman from Seva was collecting stones for the
construction on the hill of El Montgròs, and discovered
that the loose stones formed part of ancient walls. He immediately
contacted the experts, who on excavating the area, found a
fortification constructed some 2,400 years ago by the Iberian
Ausetani people. The wall closes off the sole entrance to
a hill surrounded by cliffs, so creating a splendid fortification.
The wall is still undergoing archaeological and restorative
investigation today. The Iberians of the Montseny were essentially
farmers, and they usually built their fortified towns on hills
for defensive purposes. These types of constructions are known
as oppidums.