Brownstone
From ATLauncher Wiki
Brownstone is a block added by the Tinker's Construct mod. It is created by placing a block of gravel into the casting basin of a smeltery and then pouring tin onto it. It costs one nugget of tin. You can run faster over this block.You can also use it to create Brownstone by cooking it in a furnace, or use a chisel to turn it into Brownstone road, which will allow you to run even faster. If you're planning on using Brownstone to speed up your frequent travels, you can maximize your output by using Brownstone Road Slabs.
