Pylon Wall

From Liquipedia StarCraft Brood War Wiki
[e][h]Pylon Wall
Technique Information
Building Setup

A Pylon Wall is used to secure your Expansions against Vulture Harass. Pylons are erected at the passageway to the expansion to prevent Vultures from passing through, but still allowing Probes to pass freely. Since Vultures are highly effective at killing Probes, even when Cannons are present, Pylon Walls have become a standard tactic in the PvT match-up.

A Pylon Wall can backfire if the Terran incorporates Dropships into his play, as the wall works both ways.