The snapshots collection
The snapshots collection in the content collection of the Repository contains snapshots. The collection is dynamically created after the first snapshot is created.
This collection is organized by cycle, although it is unlikely you will ever see anything other than an authoring sub-collection. An additional localization sub-collection is created when a user takes a snapshot of a map in the Localization cycle. By default, a map in the Published cycle cannot be snapshotted, so you should never see a published sub-collection.
It is not possible to publish or localize an actual snapshot object. (When you publish a snapshot, you create published content objects based on the pointers in the snapshot, but you do not create a published copy of the snapshot itself.)