I’m generally looking for a somewhat large island with a natural land bridge to the mainland, or a reasonably-sized gap (the river) that i could easily build a bridge over. I think mountain tops could also work as well. I basically want a flat area that has one entryway for easy defense. I’m not sure how i feel about mountain tops as the starting area, necessarily, because that eliminates any farming, which is the only source of food early on, really. Thanks in advance 
just like at the bottom right of the image?
or this…
I mean just search this thread, it’s a gold mine
yeah! But i’m not a big fan of the sunken parts of the ground 
I dont know how to get rid of them and they impede my building