A group of smaller rock formations with their own summits make up Bronto Rock which lies to the north of Stirrup Rock.
From the parking area walk west towards Zippy Rock, then turn north and walk the wash passing Stirrup Rock on the left. Bronto Rock is the next formation to the north.
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Buckeye 5.4 4a 12 IV 10 VD 3c Trad, 1 pitch, 30'
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