Tunnel cut into the steep base of San Gabriel Peak and completed in 1942 by the USFS.
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- View of Mueller Tunnel from Mt. Markham
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- Mueller Tunnel
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- Mueller Tunnel
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- Mueller Tunnel
Hikes:
- Eaton Saddle to Mt. Lowe: 3.2 miles, 520′ of gain and loss.
- Eaton Saddle to Mt. Markham: 3.2 miles, 790′ of gain and loss
- Eaton Saddle to San Gabriel Peak: 3.2 miles, 1071′ of gain and loss
- San Gabriel Peak Trailhead to San Gabriel Peak to Eaton Saddle: 3.4 miles, 1,411′ gain, 1071′ loss
- Eaton Saddle to Mt. Lowe, Inspiration Point, Mt. Muir, and Mt. Markham: 8.8 miles, 2211′ of gain and loss.
- Eaton Saddle to Mt. Lowe and Brown Mountain: 9.1 miles, 2,520′ of gain and loss.
- Red Box to Valley Forge, Mt. Lowe, and San Gabriel Peak: 11.1 miles, 3,020′ of gain and loss.
Hiking Angeles Forest 