An event cache is a gathering of geocachers.
There have been dinners as well, such as South Australia's Shankers Get-Together Dinner which have been well attended.
EcoDave listed an event for his wedding: I thought love was only true....
Event caches can also be listed to get people together for an adventure trip - Claustral Canyon.
They can even include crossover events with a more competitive element like the Geogaine, combining geocaching and rogaining.
Some of these events will be large, others small. They are open to everybody, but not everybody will be able to, or inclined to, attend every event in their area.
Larger events, called mega events, may be multiple days in duration and have a number of geocaching related games and activities oprganised. An event is classified as mega if it has more then 500 attendees. Even larger events, with regularly more than 5000 attendees, can be classified as giga events.
(You can also select your State for a more specific list.)
- Geocaching.com has guidelines for listing event caches
- Geocaching Australia has no restrictions on the listing of event caches