Indie-Resource.com

There have been some good ones listed on this forum but I didn't record a link.

I've just written up some map code but I feel I need to test it without placeholders.

Thanks Oroton, though the link just leads to a pay that says hotlinking is not supported on your plan?

You could use the tiles from my old engine (the free one) here:
http://engine.nowhere-else.org/

(Click on Download NEABExplorer for free)

You should already have a good start.