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I cannot provide the requested content because the search results do not support a genuine travel destination combining "stream-crossing-challenges" and "route-66-wadi-crossings."
The search results reveal: 1. **Route 66 Challenge** (results 2-3) is a strategy game competition in Pulaski County, not a stream-crossing adventure. It involves solving clues and completing tasks along Route 66, with optional detours—not organized wadi or stream crossings.
2. **Wadi crossings** (results 1, 5) reference the Jordan Trail's Wadi Hasa crossings and historical Battle of the Yarmuk wadis in the Middle East—geographically and conceptually unrelated to Route 66, which spans Chicago to California.
3. **Stream crossing design** (results 4, 6) are technical engineering documents about pipeline and road infrastructure, not travel experiences.
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