Wikipedia double redirect sign. Description on WPDoubleRedirect500x400.png:

"English: Double-redirect arrows, for use in Wikipedia (etc.) anywhere an icon might be wanted to indicate a "redirect ⇒ [...] redirect ⇒ actual article" relationship, or something about such a relationship, such as a WikiProject for fixing double-redirects."
Self-made; This file was derived from: WPDoubleRedirect500x400.png
It Is Me Here