When I was a teen, still living with my parents, we had a gorgeous, huge, white, deaf cat. He managed to get into a very tall pine tree (if I remember correctly he got "stuck" somewhere between 60-70 feet). Pines don't have low limbs (at least not this variety) and from what I understand, cat claws don't work as well going down as they do up.
Plus, we couldn't coax him down verbally, and he was terrified. We tried everything we could think of...no success.
After 4 days, we did call the fire dept. (we had a volunteer unit that was located in our neighborhood, and it was an area where everyone knows everyone). The only way they could get him down (he was far out on a limb that was barely big enough to support his weight) was to climb up with spiked boots, and cut the limb. They had the big fire engine out there so every neighbor within 5 blocks was watching. A lot of people brought sheets out to make safety "nets".
Okay...now, falling limb with terrified cat clinging to it. Cat hits a sheet, runs off, and goes...guess where? Into a storm drain...where he promptly got stuck.
It took some time, but with the help of the fire dept. (Bless the Volunteers!)
he was safely rescued. He was taken to the vet and suffered only a slightly broken claw and a coat of mud on his beautiful, long white coat. The rescuers didn't fare quite as well...most of them were head-to-toe scratch-marks and dirty white fur. He lived to the ripe old age of 18 and he never climbed a tree or went into a storm drain again...that I know of.