Hello everyone! This is a friendly reminder that any of these fun places we may visit, we are a guest at. Please treat both businesses and trails with the utmost respect. We here at Hidden San Diego follow the 'Leave no Trace' mantra, meaning whatever you bring with you comes back with you. If you see trash on a trail, please do your part to help remove it. Remember, we are not picking up trash from another person but instead cleaning up for Mother Nature. Happy adventures!

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14386 Midland St.
Poway, CA 92064

32.973950, -117.036288

Dog-Friendly: No    Kid-Friendly: No


Personal Experience: The Midland Tunnel was discovered one day during a walk, and since I know a handful of you enjoy exploring storm drains I figured I'd put it up here! We didn't make it too far because there were bats inside! Agh! I'm actually intrigued to get up close and personal with them though so next time I am going to have some sort of armor and mask on. 😛 I'm sure it'll be a sight to see. If anyone knows where this ends please let me know!

If you are into tunnel exploring, we have a few great adventures on our site.  Make sure to check out the Specter Tunnel, Alvarado Tunnel, Meadowbrook Tunnel and Half Moon Tunnel!

You don't even need to hop the fence to get in.  There's a little slot to enter if you look hard enough:midland tunnel

There's a bonus tunnel to the right of the storm drains that we didn't see from the street!

The bats are in there!Perfect place for photoshoots, break-dancing and it has great reverb for singing:

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1 Review

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1 Review


  • Anonymous
    Rating Overall Rating Difficulty Finding

    El cajon tunnel east of pepper about a half mile under second Street,runs about a mile under second

    November 18, 2018

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14386 Midland Rd, Poway, CA 92064, USA


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