--- Geoff Horswood <geoffhorswood@...> wrote:
> Working on an orcish language, I'm finding the fact
> that they spend much
> (most) of their time underground to be presenting
> some interesting
> challenges.
>
> Specifically Time.
> What natural cyclical phenomena are there that
> operate detectably in an
> underground environment?
<snip>
In human experiments deep underground people settle
into a regular 26-hour "day" based on their own
biological rythms.
Or perhaps orcs have some addition internal sensory
organ that detects tidal forces, like some deep-water
fish have?
--gary