KATHMANDU (AFP) - Workers renovating a former royal palace in the Nepalese capital have discovered a huge stash of gold and silver ornaments weighing more than 300 kilograms (661 pounds), the government said Tuesday. Three boxes of treasures, thought to be more than 500 years old, were hidden in a store room under the sprawling 16th-century Hanuman Dhoka palace, a UNESCO world heritage site, a spokesman for the culture ministry told AFP. "There are coins and ornaments that look like offerings to the gods and goddesses," said the spokesman, Jalkrishna Shrestha.