Playing v2.6.0, ruleset civ2civ3, my engineers are showing Transform to Hills greyed out. I did this playing Default ruleset.
Might it be an issue with the surrounding tiles (1xhills, 3xplains, 2xmountains)? That it already has mine/road on it?
Update: Transform to plains is not working on a tundra tile, also.
Transform Mountains to Hills -civ2civ3
Re: Transform Mountains to Hills -civ2civ3
never mind:. I see that I need Fusion Power technology. That seems to be an excessive requirement.