Canister
There is a canister on SW Hunter, and by all accounts it is still there. The log book had been stolen during the summer, but was replaced in July.
There is a herd path. The initial portion follows an old horse-drawn railroad grade ( Fenwick Lumber Company, 1903-1917). Portions of the Devil's Path and the Hunter Mountain Trail were also railroad grades.
Some clues to finding the herd path: The start is from the Devil's Path at the height of land (3540'). It is about 0.2 miles west of the Devil's Acre Lean-to and about 0.3 miles east of the Geiger Point lookout. The Devil's Path has red DEC markers. Immediately west of the herd path junction there is a tree on which the red markers on both sides have faded to near yellow. The herd path follows the narrow, overgrown, level, railroad grade. After about 0.5 mile on the grade there is a small drainage, turn uphill and climb about 200' elevation up the drainage. Above that the herd path meanders a bit on the flat summit but leads to the canister. Some bushwhacking is probably necessary in the winter.
Cairns are sometimes present at the two junctions, although they are not needed. Occasionally hikers use brush to block the continuation of the railroad bed at the drainage, which is not good as the railroad beds are historical artifacts and should not be unnecessarily blocked. Good luck.
edit ... A cautionary note: There are at least two other short paths in the area. These head off the Devil's Path west of the railroad grade and dead end at some campsites of marginal legality (3500'). If you find yourself on one of these head back to the Devil's Path and look again to the east.