Chocolate tube slime mold (Stemonitis axifera)
This pile of stringy chocolate is the best one I have found.
It was about 25cm square, really densley packed, and on the shaded side of a large gum tree.
Found in a tiny nature reserve in rainforest.
I suspect Stemonitis axifera but species level ID really requires microscope work.
Another possibility is S fusca.

''Stemonitis axifera'' is a species of slime mold. It fruits in clusters on dead wood, and has distinctive tall reddish-brown sporangia, supported on slender stalks.
Similar species: Stemonitales
By Mark Ridgway
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Uploaded Mar 28, 2016. Captured Feb 9, 2015 01:25 in 165 Olinda-Monbulk Rd, Olinda VIC 3788, Australia.
comments (4)
http://www.jungledragon.com/specie/3278/chocolate_tube_slime_mold.html Posted 9 years ago
Still not 100% sure but that's often the case I guess. Posted 9 years ago