Manco Inca survived another Spain raid in 1539 by Gonzalo Pizarro, 300 Spanish soldiers, and Indian allies. The Spanish and the Incas fought a battle at Huayna Pukara (Huayna Fort), west of Vitcos and about from Vilcabamba. Several Spaniards and Indians were killed, but Manco again escaped. Pizarro stayed in the region for more than two months searching for Manco unsuccessfully, but capturing Manco's principal wife Cura Ocllo. The Spaniards wrote of the region that "great resources are needed to undertake a penetration of that land. It can be done only with very heavy expenditure." The Spanish would not attempt another major military expedition into Vilcabamba until 1572. As the two Spanish raids demonstrated, Vitcos was accessible to the Spanish and Manco developed Vilcabamba as a more remote refuge.