Thoroughbred Statue

The Thoroughbred Statue is a treasure found in. It is actually a silver.

Collecting the treasure
After the first instance of pushing back iron blocks from Stony Flint Beetles, a vine that can be pulled down is within reach of Olimar’s Pikmin. However, going through the doorway the vine made available shows that the player has no way of collecting the treasure. To collect it, you will need to throw Yellow Pikmin to have them carry it. To obtain Yellow Pikmin, continue through the level like normal, until the cutscene with Yellow Pikmin plays. Then, jetpack onto a low semisolid platform, onto the nearby iron block, then into the hole with the Yellow Pikmin. Collect the Yellow Pikmin, leave the hole, and return the room with the treasure.

Trivia

 * The room where the treasure is found is in the shape of a chess knight.