Cave Man is the most difficult pure ice route in Lee Vining Canyon. It's the right-most route on the Main Wall.
The first pitch starts up a nice 50 foot stretch of off-vertical ice. There's a bolted belay (sometimes hidden behind ice) if you decide the curtain doesn't look so good after all. Otherwise head up the steep and sustained curtain. Stop at a stance with a bolted anchor just over 30m up.
Step left off the anchor and continue to the top. How far left you move before heading up will vary with conditions. Belay at another bolted anchor at just under 30m. You can either rap from here in two raps or walk off to your right past the top of Chouinards.
6-8 screws and a few pins and cams if the ice is thin for the top.