1. Inner Chambers: There are two inner chambers within the pyramid. The first chamber is known as the "Antechamber" and is located directly above the main entrance. The second chamber is the "Sanctuary," which is where the red jaguar throne and other artifacts were found.
2. Red Jaguar Throne: Inside the Sanctuary, there is a red jaguar throne carved from a single block of stone. The throne is decorated with intricate carvings of a jaguar, representing the Mayan deity Kukulcan.
3. Chac Mool Statue: Another significant artifact found in the Sanctuary is a statue known as the Chac Mool. This statue depicts a reclining human figure holding a bowl on its stomach, believed to have been used for sacrificial offerings.
4. Altar Stone: In front of the Chac Mool statue, there is a round altar stone with symbols representing the four directions and the Mayan calendar.
5. Serpent's Head Platforms: At the base of the pyramid, on the north and south sides, there are two platforms with carved stone serpent heads. These platforms are aligned with the sun during the spring and autumn equinoxes, creating an illusion where a serpent's body appears to descend down the pyramid's steps.
6. Echo Chamber: The pyramid's interior is designed with acoustics that create a distinct echo when a person claps at a specific point. This feature was likely incorporated for ceremonial or ritualistic purposes.
It's important to note that the Chichen Itza pyramid has undergone extensive archaeological research, and access to the inner chambers may vary depending on conservation and safety considerations.