Pete Casey has not entered Peru yet. Maybe one more month. Check his last update:

Crispin, Pete and Johny. Washed, fed, rested & ready to go again. Ticuna community Jerusalem, Amazonas, Brasil Photo. Pete Casey

Pete Casey about 100 km from border with Peru on Aug 27, 2018

Pete Casey’s location on Aug 27, 2018. Long way to go yet!
https://www.ascentoftheamazon.com/2018/09/the-law-of-the-jungle/