To the Bat Poles!
The Bat Poles mod adds a variety of poles for a quick descent as far down as you want to go. They range in materials and so long as you’re within jumping distance you can hop down in a flash!
You’ll need to make them with enough space to fit you and the pole and after that just hang on to the bottom. You can also hold shift to stop in the middle if need be.
You can make poles out of Obsidian, Gold, and Diamond as well.
And you can even use fence posts as poles too!
There’s also a redstone pole that when you add power to it you’ll go up instead of down!