Salcantay, also known as Salcantay or Salkantay, is a prominent mountain in the Vilcabamba mountain range, second only to Ausangate. It's a popular alternative trekking route to Machu Picchu, offering stunning Andean scenery and diverse ecosystems. Accessibility can be challenging due to the high altitude and rugged terrain, requiring a good level of fitness. While solo trekking is possible for experienced hikers, guided tours are recommended for safety and logistical support. The best time to visit is during the dry season (May to September). The Salkantay Trek typically takes 4-5 days and can cost anywhere from $400 to $800+ depending on the tour operator and level of service. Be prepared for varying weather conditions and altitude sickness.