Book Two, The Four Forces, opens with Alexa emerging from a port door into an underground ice cavern where the Finos live. Although this is a work of fiction, ice caves/caverns exist in many places on Earth.
One of the most famous ice caves is the Ningwu Cave in China’s Shanxi Province, which was formed during an ice age three million years ago. What’s impressive about the Ningwu Cave is that it allows 1,000 visitors a day during the summer months.
Iceland is also home to many ice caves, which can be accessed by tours. They all offer a spectacular opportunity to experience an ice world just like Alexa!