Welcome to Bigwalls.net, a repository of all things bigwall climbing.  

For the old Bigwalls.net (around since mid 1990s), which is old but still has some useful info, click here (opens in new window).  

To contact John Middendorf, email is best.

BIG WALL RESEARCH AND HISTORY--sign up for Mechanical Advantage series at http://bigwallgear.com

Index to Mechanical Advantage

SEARCH bigwalls.net AND BigWallGear.com:

Click here for Mechanical Advantage, Volume 1 (450MB PDF file)

Note: Bigwalls.com now goes to Ryan's big wall how to video pages--see note from his page below:

Above: Portaledge evolution 2017-2020 (left: D4 full-size 2017, right: D4 Delta2p 2020). Pete Zabrok photo.

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