This Article Contains information directly from the Pikmin Games. This article is based off of an Enemy/Treasure/Area/Cave/Pikmin/Character from the Pikmin series of Games.
The Spiny Alien Treat is an artichoke. It is found in the Valley of Repose, on an island near a drainable lake. Before you drain it and let your White Pikmin dig it up, make sure you defeat the Red Bulborb in the arena and the smaller Dwarf Red Bulborb that accompanies it. Lead your Blues to the rock formation that is behind a white gate. After you destroy the rock formation, lead your Whites to the island where your Treasure Gauge is beeping furiously, the Pikmin will start digging up the treasure and bring it to the ship.