The Digital Logbook, or DLOG, gives you the ability to create a detailed digital representation of the activity you have performed.
Upload You can upload DLOG records individually or as part of an expedition. You can provide a precise description and location of the activities you have performed. This data is stored as a GPX file and can be uploaded alongside a course report to provide further evidence when trying to obtain a qualification or award.
DLOG - DescriptionDLOG - Map
Leaderboard The most prolific tahdah users appear on the DLOG leaderboard.

DLOG - Leaderboard 2