"Mount Bonnell is a prominent point alongside Lake Austin. It has long been a popular picnicking & tourist spot ever since the mid-1800s, where one can obtain an excellent view of the City of Austin, Lake Austin, & the surrounding hills of the Hill Country."
Thought the tourism site of Austin could explain Mt. Bonnell better than I could. We went out there after the New Year to explore and enjoy the sunset.
It was amazing!