You're asked by a farmer explorer to find the finest grass in the Scarlet Pillars! She says that in order to produce better livestock this grass is necessary! So head on out to the Scarlet Pillars and head to the spot A/2-2/2 and mark it on your map! This will make it easier to to find it again once you head back to the bar, which you'll have to do now! She'll ask you to point out where on the map you found the plains (hopefully you marked it well!) and then she'll tell you to hold on she's going to go check it out! Once she's satisfied she'll allow you to collect your reward!