  Previous discoveries of the first author (1984-88) on so-called hyperbolic
football manifolds and our recent works (2016-17) on locally extremal ball
packing and covering hyperbolic space $\HYP$ with congruent balls had led us to
the idea that our "experience space in small size" could be of hyperbolic
structure. In this paper we construct an infinite series of oriented hyperbolic
space forms so-called cobweb (or tube) manifolds $Cw(2z, 2z, 2z)=Cw(2z)$, $3\le
z$ odd, which can describe nanotubes, very probably.

Metric Geometry