The Subway is a must see/shoot for any landscape and nature photographer. Located away from the main part of the park in Left Fork Canyon, the entire hike is rugged and beautiful with numerous waterfalls and great fall foliage. In fact, I spent more than 4 hours stopping and photographing various scenes in Left Fork Canyon before even reaching the Subway. The Subway formation itself and the surrounding pools of turquoise colored water are a like candy for the eye. Its pure magic how the afternoon light illuminates the tunnel walls contrasting with the red rock, cool water and colors of autumn.
Left Fork Cascade
Deadfall and Maples
I just can’t resist shooting these maple leaves when I find them in perfect compositions…
Red Maple Leaf on a Log
Archangel Falls I
Archangel Falls II
Unamed Falls below the Channel
The Left Fork Channel
The Subway I
I took a few other compositions of the Subway and I’ll share those in my next post, so stay tuned!
P.S. Do not underestimate the difficulty of the hike to the Subway. It is rugged with lots of up and down (and around obstacles). And the mile climb back out of the canyon to the parking lot is very steep. Even my Colorado mountain trained lungs were huffing and puffing. 
Its a really cool spot. I could have shot here for hours. The channel is 30-40 feet long, so the possibilities are practically infinite. I love setting up these intimate compositions – deciding what and what not to include in the frame…
I love Zion this time of year! Looks like you had a great trip and captured a lot of great images!