Ezra Miller, the DC Extended Universe's Flash, has joined his Justice League co-star Jason Momoa in protesting the construction of the Thirty Meter Telescope (TMT) on Mauna Kea in Hawaii.The highest point in Hawaii, Mauna Kea is a dormant volcano and is considered sacred land by Native Hawaiians. Momoa previously posted images of the TMT's construction site on Instagram, and urged others to repost the images.RELATED: The Flash Movie's Slow, Tortured Journey to ProductionAn of image of Momoa and Miller together in Hawaii was posted on the Twitter account DC Films United, alongside the caption, "Ezra Miller supporting Jason Momoa in protest over telescope construction in sacred place in Hawaii."

It has been reported that construction of the TMT would cost around $1.4 billion and its size would make it one of the world's largest telescopes. Protesters have managed to block a main road leading to the top of Mauna Kea, effectively halting construction.

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Momoa is slated to star in Aquaman 2, which is scheduled for release on Dec. 16, 2022.

The Flash is expected to be directed by John Francis Daley and Jonathan Goldstein, with the duo directing from the latest iteration of the script courtesy of Ezra Miller and Grant Morrison. As of now, The Flash does not have a release date.