Yabba Beacon 421M is a prominent conical hill. It rises above the eastern shore of Lake Borumba, and can be accessed by a walking trail from Broumba Dam picnic grounds.
It has commanding views of Yabba Valley and of its tributary valleys of Ryan and Little Bella Creeks to the north towards Mt Kandanga 576M, the highest summit on the background range. Both summits are included in Imbil State Forest, there being a firetower/communications tower on the Mt Kandanga summit. And both summits are accessible by forest roads.