Farming this spot I manage to get a minimum of 200 cloth per hour, topping off at 260 cloth per hour. It really is a great farming spot as the mobs are in packs, hit like pansies and they have a high drop rate of cloth. Top it all off with a potion of treasure finding, you're golden.
The red path is where you will be farming, the mobs are the packs of Jaspertip Swarmer, also you can pull the bats, with the potion of treasure finding everything has a chance to drop the tiny treasure.
The way the potion of treasure finding works is, every mob you kill has a small chance to drop a tiny treasure, One tiny treasure can yield 3-12 cloth, gold, and sometimes volatiles. I find that the drop rate on the treasure is roughly about 5-6% per mob.
If you're not an alchemist, I suggest you go have the potion made for you, or check the Auction House for one, they currently run at around 100g per potion, but it will last you a full hour, spending that 100g will get paid back solely by the gold contained within the tiny treasures.
While farming here, you will also find that you will walk out with tons of greens and grey items, this is great, it's extra income. By farming here for an hours, I estimated I made roughly 2,500g. It's not bad, if you ask me, as the prices for ores and herbs are steadily declining.