DC 12
Spoiler
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In the light of the fading sun, you spot several tents nestled between two small hills about 600 feet to the north-west.
DC 18
Spoiler
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There are a few campfires lit sending forth tendrils of smoke. The tents are made of animal hide and there are spears planted along the edges of the camp to allow for quick defense. The layout of the camp would make for easy defense and movement.
DC
(1d20+18)[35] (You see one),
(1d20+17)[35] (you see two)
Spoiler
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There are two well-armed orcs standing in the shadows of the tents, looking bored and surly.