However, a search for the version of this book presents a serious dilemma.
A Fun Adventure, but a Grey Area for Copyright Rating: ⭐⭐⭐☆☆ (3/5)
If you are looking for El diario de Pilar en Machu Picchu for free, Instead, check your local digital library. The book is wonderful, but supporting the author ensures she can write more adventures for Pilar. The "free PDF" is a pirated copy, and you will have a better, safer reading experience by borrowing it legally.