Few things shine as bright as the jewels of Hell
A rare and diseased jewel, a canker fallen from the heavens
“Gold. GOLD. GOLD! Beautiful, wonderous, Gold! I am Rich I tell you. I am the luckiest man alive!”
“Ever in my hand, lies the Blade of the Mad. It’s straight, simple craft is so alluring to me… It drives me to evil, but I love what it does. For the first blood the blade tasted was that of a human.”
As the PCs travel the road, right after a bend they hear a sharp whistle and call: "Heeey, not so lazy, move your asses!" It is a large man that calls, and there are unwilling workers that listen. A small company, 10-15 men work on the road, push boulders aside, dig up roots from under the road, etc. The large man that shouted turns to you, smiles fast and mutters something under his breath, sounds like cursing some lazy worker. "Where does the road bring you from, travellers?" And does a little small-talk.
And what is really happening? A group of bandits is 'adapting' the road for shady purposes. The road will not be wider, but tighter, with enough cover around (and a few traps perhaps), and will become an ideal spot for ambushing travellers or entire caravans. The bandit leader wants them all to appear harmless. The 'lazy worker' he cursed was actually a guard that should give warning before any travellers come around (fallen asleep). Not surprisingly, the boss may decide for an ambush even now.