Boulder Rapids is an area in the Frontier Legends DLC for Bloons TD 6. It is a large region of desert next to a river, located west of Sandytown. This is the location where Sheriff wakes up at the start of the story and saves Scout from a Roaming Bloon. This area contains a few Bananite crystals and a chest next to the Campfire, but it is otherwise relatively empty, having no Bloon Encounters.
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