Original: It wasn't until the explorations and discoveries of Antonio Santander Casselli, and Gene Savoy in the 1960s, however, that many came to see this site at Espíritu Pampa as the real Vilcabamba of legend.
Simplified: It wasn't until explorations and discoveries in the 1960s, that many came to see this site at Espíritu Pampa as the real Vilcabamba of legend.