Indeed, not all departed. The Sindar or Grey Elves of Doriath and the Falas remained behind and through all the Ages of Starlight built the wonderful kingdoms there. Also out of the east came another remnant people of the Teleri, the Laiquendi Elves, who settled in the riverlands of Ossiriand just east of the Blue Mountains. Later still, during the First Age of the Sun, the Noldor Elves who returned from the Undying Lands built the Kingdom of Nargothrond, Himlad, Thargelion, Dorthonian, Gondolin, Mithrim Dor-lómin, Nevrast and East Beleriand. Besides the Elven people there were two Dwarf realms of Nogrod and Belegost, several wandering tribes of Men and finally the invading forces of Orcs, Balrogs, Dragons and other monsters from out of Morgoth's evil kingdom of Angband. It was these terrible invasions of Morgoth that eventually brought to ruin every one of the Elven Kingdoms during the War of the Jewels. This resulted in the War of Wrath, wherein the Valar themselves came to destroy Melkor, but in so doing all of Beleriand was broken apart and swallowed up by the sea.