The town was obscure. That would be if the town seemed odd or twisted in shape or something If, say you were looking through a funny mirror, you might say 'my image is obscure' (twisted, blurred,...
That arcane information is so obscure that current language prevents accurate description. Have you ever noticed the colors in the clouds as they lightly obscure the sun?Please, lady, if you don't...
example of obscure as an adjective:
They found an obscure little town in the middle of the country.
example of obscure as a verb:
The dark clouds obscured the moonlight.