The name Yilliminning comes from a Noongar word for nearby (now saline) pools.

Like Foxes Lair and Railway Dam, this is a must-see spot for visitors to Narrogin. Located 19 kilometres east of Narrogin, Yilliminning Rock offers superb wildflower displays in the spring months, and an impressive 48-metre-high granite inselberg which offers panoramic views over the surrounding bush and farmland.

This historic spot also has a memorial salmon gum tree with information on George Brockway, a little-known but amazing forester and conservationist.

The rock is part of a larger reserve with interesting Kwongan gravel wildflowers in October. However, there is more to Yilliminning than just the rock. Adjacent to the north is kwongan sandplain/ gravel country that has a wonderful array of wildflowers, and you can do a 17 kilometre return loop to Narrogin through the scenic country to visit historic Yilliminning town site and Marramucking Well.

There are picnic tables but no toilet. Fires and camping are not permitted.