Huayna Picchu translates to Young Mountain in Quechua. It's 2,667m/8,750ft above sea level and part of the chain of Andean mountains in Peru.
While the city of Machu Picchu gets all the glory, what you see in all the classic photos of the citadel is in fact Huayna Picchu in the back.
As you can tell, Huayna Picchu is the mountain that has become synonymous with Machu Picchu. It's that spine of the mountain that takes you to the top.
Your guide will sort out the tickets with the guard while you sign in what seemed almost like a guestbook. You'll need your passport number.
This part is challenging because you're faced with switchback stairs and potentially slippery rocks from morning dew or rain.
At any point, you can use one of the terraces of viewpoints as a break and photo stop. If you keep going along the trail, you'll reach a small store house and additional agricultural terraces.
Next steps