The fruit of the Wangadi tree should be treated with respect, because if eaten at the wrong time it can be mind blowing.
"It was another beautiful sunset in the wastes. In the distance I could see an entire meadows worth of plants sliding to a safer place for the night." Exerpt: A Prospector’s Tale, VOL XXIII Blue Guild Press
"Just when I thought it could not get any hotter, we cleared the crest of a small hollow. There was the most magnificent sight, a huge shadey tree hidden in the depression. It must of been there for decades for I had never seen a Drooping Tree that large before and in my decades of prospecting since," Exerpt: A Prospector’s Tale, VOL XXIII Blue Guild Press
"Tumbling dang danger" the old old prospector said.
The ochre sands stretch for miles around. Something kicks up the dust. It’s a yak. A desert-yak. It ambles slowly, nuzzling the ground for the low-growing shrubs. The ranger freezes. “Stay very still,” he warns. “Don’t move at all.” “What is it?” you ask, breathlessly. “It’s the most dangerous creature in the whole Ocadian desert. And it’s about to eat that yak…”
After the PCs defeat (or force the rapid retreat of) a villanous necromancer/demon summoner, they discover a book. This book outlines how to summon a demon whose power increases according to the size of the summoning circle used to summon it. And after the PCs examine a map of the country, they find that the layout of the cities and roads match up with the required summoning circle. In fact, the final road that would complete the circle is currently in construction.
With anyone who can find out about the circle and the ritual to summon the demon able to somehow make the final road/line, and destruction of the cities and roads currently in existence out of the question (unless this is an evil campaign- that removes the moral quandary), how are the PCs going to solve this problem?