This is a pre-embark world with a nice embark point. There's a picture included that shows the 4x6 embark I chose, which has everything you could want, including sand, flux, trees, water, all layer types, obsidian, all ores, etc. There's even a nice waterfall on the brook with a 6-tile drop. The picture I included has been edited to show all four biomes and all the layers in each. Most of the vegetation is on the southern half of the embark point.