OK, I'm loving the Reveal Map spell at Level 6!

Check this out!
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RevealMap-Everdale.jpg [ 32.92 KiB | Viewed 948 times ]
Torches, chests, doors, and people! all showing up! Even wells show up as light blue dots!!
(Still - the one place where I like Book I's Cartography better? In Book I, I'm pretty sure barrels showed up with a completely unique color, whereas they don't seem to in Book II...)
Anyway, my one suggestion (I'll add this to my other thread as well...) - I'd like it if the Reveal Map spell's duration was increased to 100 or 160 turns. I can't think of any reason why this change shouldn't be made...
But, one strange thing:
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RevealMap-Farrock.jpg [ 30.41 KiB | Viewed 948 times ]
Why is it that with Cartography at Level 18 the (dark brown) borders of the Farrock caves isn't showing up (when it does with Cartography at Levels 1-5)?...