Could Venus have livable caves deep underground?

KarenRei's answer is very good as there is a significant degree of uncertainty, that said, I think the answer to this question is a clear no, the Earth would not be habitable at Venus' distance to the Sun. Not unless you're a waterbear living in a very deep cave. Venus' average distance to the sun is .722 AU. Source. read more

Let’s assume we have infinite resources, current technology, and a healthy chunk of time. Things we need to live for nearly forever underground: Food. Lots of it. Here’s how: Make a farm. Some of it should be hydroponics. It will probably take up at least 3/4 of our habitable area - which will be really big. read more