Secret Spring is a two player map created by Blizzard for the 2015 Season 1 ladder play.
Official Map Description
Secret Spring's unique feature is that there are 3 ground paths to your opponent, two of which are initially blocked by destructible rocks and a third which begins as open, but can also be blocked by breaking down collapsible debris. Therefore, although the rush distance is shorter on this map compared to most other maps, players will be able to make the choice of rushing early or breaking down debris to play a more of a defensive game. We’re excited to try out this map and see the effects of having ground paths which can potentially be cut off depending on the players’ choices within the game. We believe one of the main important factors when playing on this map will be to scout which paths are being opened up throughout the course of the game. 
- There are three paths to your opponent's side of the map, two of which are blocked by Destructible Rocks, and one that can be blocked with Rock Towers.