This is an installable GPS map for the Drakensberg. This map is intended for use on an Android device running the OSMAnd App. (Limited) Instructions for installing and use are provided within the download. 

If you are using a Windows based machine running Basecamp and want to install the map on a Garmin GPS, please see this link:

https://www.vertical-endeavour.com/downloads/download/4-drakensberg-hiking/206-drakensberg-gps-map-for-garmin-basecamp.html

If you are using a MAC and want to install the map onto a Garmin GPS, please see this link:

https://www.vertical-endeavour.com/downloads/download/4-drakensberg-hiking/209-drakensberg-gps-map-img-for-mac.html

Forum topic below gives a few more details and screenshots etc:

https://www.vertical-endeavour.com/forum/44-gear/56345-drakensberg-gps-maps.html#72776