  New counter-propagating geometries are presented for localising ultracold
atoms in the dark regions created by the interference of Laguerre-Gaussian
laser beams. In particular dark helices, an 'optical revolver,' axial lattices
of rings and axial lattices of ring lattices of rings are considered and a
realistic scheme for achieving phase-stability is explored. The dark nature of
these traps will enable their use as versatile tools for low-decoherence atom
interferometry with zero differential light shifts.
