Deep Notch has a lot of beginner ice routes. I don't think you can top rope them as I don't know any walk around trails. Most routes are between grade 2 to 3+. Check "An Ice Climber's Guide to the Catskill Mountains" for more details.
Take exit 20 of I-87N. Then Route 32N to 32A, make a left on 23A toward Palenville. Make the left onto 42. Drive pass the chain-link fence, about 3/4 miles down the road, there is a parking area.
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Mountain Project's determination of some of the classic, most popular, highest rated routes for Deep Notch:
Mr Dolittle's Hotel WI2-3 Ice, 1 pitch, 130 feet
Featured Route For Deep Notch
Mr Dolittle's Hotel WI2-3 NY : Catskills (Ice) : Deep Notch
It's a fun and easy climb. It has two parts, separated by a large ledge. Even thought the grade from guidebook is 2+. It's still fairly steep but short. If you go up left, I think it's 3, if you stay to the right, it's 2+....[more] Browse More Classics in NY