The tree was found in a remote area of Redwood National and State Parks purchased in 1978.[3] It is estimated to contain 530 m3 (18,600 cu ft) of wood.[4] The Park also houses the second tallest tree Helios, and the third tallest Icarus.[5] Sillett estimates Hyperion to be 600 years old[6] while others report it to be roughly 700–800 years old.[6]