The cast of Solitarius - 2009 includes: Nicholas Oscoff as Alan

Cuculus solitarius

Lonely sacred place.

The name of the pacific endangered species is Hawaiian Hawk (Buteo Solitarius). It is the bird of the region.

"Solus" is lone or alone in Latin. If you wanted to say inside, you would use either in + the ablative, or intra + the accusative. It all depends on what you are saying in your sentence. Alternative words for lone/alone can be "solitarius"or "avicus", but again it depends on your sentence.