From Guild Wars 2 Wiki
Refreshing Springs can be found within the Searing Ascent jumping puzzle. They function as checkpoints.
Upon interaction, the character gains the following special action skill.
|Return to Checkpoint||5||Teleport back to the last checkpoint you reached.|
- Falling below a certain height or leaving the area removes the skill.
- Leaving the map in any way (including logging out) will remove the skill.