Background: To present a stepwise dissection using the extradural transcavernous approach (Dolenc’s approach). Methods:Two formalin-fi xed and latex-injected imported cadaver heads were dissected at the Tri-Service General Hospital skull base laboratory. Extradural transcavernous dissections were made via a modifi ed orbitozygomatic craniotomy. Results:The results were illustrated with a series of photographs of the scalp phase, skull phase, and dura phase sequences.Conclusions: Stepwise dissection using skull base approaches can be performed in a systematic manner so that workshop participants can effi ciently learn more about the donated human cadaver.