The “Elephant in the Room” mystery in Indiana Jones and the Great Circle is a complex puzzle that involves finding and placing three elephant statuettes in specific locations under a Buddhist shrine. Here is a detailed step-by-step guide to solve this mystery:

### Location of the Mystery
The Elephant in the Room mystery can be found near Voss’ Camp in the Sukhothai region of the game. It is located in a somewhat hidden temple north of Voss’ Camp, guarded by two Nazis. You can either deal with them in combat or use the Royal Army disguise to pass by.

### Starting the Quest
1. **Enter the Temple**: Once you have navigated past the guards, enter the temple and take a picture of the Buddhist statue to start the quest.

### Finding the First Elephant Statuette
2. **Burn the Wooden Planks**: Look to your right and notice an elephant statue behind a wooden planked wall. Use your lighter to burn the planks, revealing the first elephant statuette.
3. **Place the First Statuette**: Place the first elephant statuette on the pedestal on the right side of the large statue. This will open two new alcoves.

### Finding the Second Elephant Statuette
4. **Access the Second Alcove**: Look to the right side of the room and find the second elephant statuette in one of the newly revealed alcoves. Place it on the newly revealed pedestal on the right side of the large statue.
5. **Unlock the Left Pressure Plate**: Placing the second statuette will open the blocked left pressure plate underneath the Buddhist statue.

### Finding the Third Elephant Statuette
6. **Burn the Boards**: To access the third elephant statuette, you need to burn the boarded-up compartment on the left wall. This will reveal a hidden compartment containing the third elephant statuette.
7. **Climb to Higher Ground**: Enter the newly opened passageway and find a rebel journal and the Sukhothai Relics book at the start and end of the passageway, respectively. At the end of this passage, look up and use your whip to grapple to higher ground. From here, you can pick up the third elephant statuette.

### Placing All Three Elephant Statuettes
8. **Place the Third Elephant**: Place the third elephant statuette on the right-most pressure plate underneath the Buddhist statue. This keeps the compartment to the right of the statue unlocked.
9. **Move Statuettes Around**: Now, you need to shuffle the elephants around until you can cover all three spots.
– Place Elephant 1 on the right pedestal under the altar.
– Place Elephant 3 on the left pedestal under the altar.
– Place Elephant 2 on the pedestal in the hidden room.
– Move Elephant 1 to the center pedestal under the altar.
– Move Elephant 2 to the right pedestal under the altar.

### Final Steps
10. **Open the Secret Passageway**: Once all three pedestals are correctly placed, a door on your right will open, revealing a passageway containing some bullets.
11. **Capture the Elephant Skeleton**: Head inside this passageway and take a picture of the elephant skeleton to complete the quest and receive 250 Adventure Points.

By following these steps, you will successfully solve the Elephant in the Room mystery in Indiana Jones and the Great Circle.