Welcome to the Institute for Speleological Studies and Archaeology, urban exploration since 2003.
Please check back as we update our site. We apologize if you are looking for specific locations, unfortunately we've lost the majority of images due to a hard drive failure. We are in the process of retreiving what we can from backups while continuing to add new location. In the past we have focused our attention on institutions, more recently we have been focusing on military institutions. For photos of forts and other military sites please check (and "like") our facebook page @ facebook.com/USForts