A multi-cache is a geocache that has more than one waypoint. So, instead of going straight to the cache, you'll go to a waypoint where you'll find something that will help you get to the next waypoint, and so on.
Or the coordinates for all the of the intermediate waypoints might be provided on the cache page, so you can visit the waypoints in any order, collecting the data you need to calculate the co-ordinates for GZ.
Most multi-caches have 2-5 waypoints.
The information you need to collect at each waypoint may be explained explicitly on the cache page or you may need to do some searching and creative thinking, depending on the difficulty of the multi-cache:
- you may need to count something (e.g. the number of strips on a pole) or read a number off an existing sign or label
- find data hidden in a container or other label hidden by the cache owner
Of course the more difficult multi-caches can be quite diabolical!
An offset cache is usually a multi that has only 1 other location to find after decoding, updating or entering the co-ords given at the first location.
- Somebody please add one or two