I believe there are many friends in Pokemon Ultra Emerald 5 who still don’t know the guide to obtain the Mega Stone in Pokemon Ultra Emerald 55. Below is the "Pokemon Ultra Emerald 55 Mega Stone in Pokemon Ultra Emerald" compiled by the editor of Sourcecode.com "Stone Obtaining Guide", if you are interested, please read below, it may be helpful to you.
The Banguiras mega stone is located in the picture below Chimney Mountain.
