Our Favorite Instagram Photos: An Epic Ice Melt and Fierce Tiger

We selected our favorite pictures from the past week on @natgeo Instagram. See more of our photographers' photos on Instagram.

This week on the @natgeo Instagram, photographers honored the majestic tiger for International Tiger Day; paid homage to one of the oldest and happiest sherpas in Khumbu, Nepal; and captured the Colorado River reaching out to sea.

Each week our photo editors select their favorite photos that were posted on the @natgeo Instagram account. Follow this week's photographers: @brianskerry, @renan_ozturk, @pedromcbride, @stevewinterphoto, @robertclarkphoto, @paulnicklen, and @randyolson.