Tyree (planet)

Tyree is a planet that is known for possessing large deserts. It is a member planet of the United Federation of Planets. 

The Orb of the Emissary was buried in the sands of Tyree until 2375, when Benjamin Sisko saw visions of the planet and woman's face in the sand. Travelling to Tyree with Ezri Dax, Jake Sisko and Joseph Sisko, he discovered the Orb and released the Prophet inside it. 

Tyree was one of the many locations from Sisko's memory the Prophets used to communicate with him while he was with them in the Celestial Temple. 

In 2376, Sisko told Jake his experiences on Tyree were one of many times he was afraid. (SS DS9 (Fear, Itself))