The Moldugas are a fictional race of creatures that appear in the popular fantasy novel series, The Lord of the Rings. They are described as being large, reptilian-like creatures that inhabit the land of Mordor. In the books, they are said to be located in four distinct places: Mount Doom, Barad-dûr, Cirith Ungol, and Minas Morgul. Each location has its own unique dangers and challenges for those who would seek out the Moldugas.
Mount Doom is a volcano located in Mordor and is home to Sauron's dark fortress. It is here where he forged his infamous One Ring and it stands as a symbol of his power over Middle Earth. Barad-dûr was Sauron's main stronghold during the War of The Ring; it was destroyed by the armies of Gondor when they marched on Mordor to reclaim their lands. Cirith Ungol is a passageway through which Frodo Baggins passed on his quest to destroy The One Ring; it acts as an entrance into Shelob's Lair where she guards her precious eggs from any intruders. Finally, Minas Morgul is an ancient city within Mordor that once served as a base for Sauron's forces during his war against Gondor; today it remains abandoned but still serves as a reminder of Sauron’s might and power over Middle Earth.
In conclusion, while we may not know what exactly happened to these mysterious creatures after the events depicted in The Lord of The Rings trilogy, we do know that their home locations were Mount Doom, Barad-dûr, Cirith Ungol and Minas Morgul - all situated within Mordor itself!