Krisztina #4643

If the Sindarin Barad-dûr (Dark Tower) in Quenya is Taras Lúna, then would Barad Eithel (Tower of the Well) be Taras Ehtelë or Tarasehtelë (alike to Tiristemindon), perhaps Taras Ehteléva (after the manner of Mindon Eldaliéva)? Is any of the above right or something else would be the correct translation?