The table to the right and the charts below are dynamic, and part of a larger tracking system I've created to allow me to organize my caving trips. Within the Google sheet I include date, who I was with, and links to external references like Flickr, or Facebook. Many old time cavers have journals, this is the same practice, modernized (with some benefits and some losses). I provide this data publicly to: Encourage other cavers to better catalog their own trips. Provide myself with a better mechanism to track my own caving activies.