Why are some resources within my borders not accessible? I build a mine on Gold resource and make sure it is connected to my capital, but it does not show up as an available resourse. It seems that resources that are not in the fat cross, yet within cultural boundaries, sometimes aren't accessible. Why is this? Edit: Also, I don't think rivers ought to connect resources until the appropriate tech is researched. As it is now, rivers connect resources from the get go.