Bukit Kopungit Hiking Trail is one of Kota Kinabalu hiking trails that are very easy to explore. It is also a favorite spot for airplane watchers to see closeup of planes taking off from Kota Kinabalu International Airport, just by the side of the hill. Other than that, multiple tunnels believed to be dug by Japanese soldiers during World War II were discovered around the area. Here is the guide to find them!