A green-flecked nozzle is embedded in the wall, ready to spew a stream of corrosive acid at intruders.
All the fun of acid mounds, now at a distance! Tunnel them to get rid of them instantly. Unlike acid mounds and acidic jellies, you can safely attack acid turrets with an unprotected weapon. Like other turrets, an acid turret can only attack you when it's within your stealth range and has a line of sight.