What organizations get close to something like a "scouting experience for adults"?

• Outward Bound [wikipedia]
• Outdoor Service Guides (OSG)
• Quest Scouts
• (good list, posted on StraightDope)
  • Meetup.com
  • REI classes
  • NOLS
• outdoors education, by universities
  • UIUC > Extension forestry programs
  • Madison-UW > Outdoor Explorer Series
• outdoors education, by government organizations
  • IDNR, Illinois DNR
    • Outdoor Illinois Journal
    • upcoming events
    • volunteer program
  • Environmental Education Web Resources, Illinois
  • Michigan DNR > Outdoor Skills Academy
  • Indiana DNR
    • events
• outdoors education, by private organizations
  • Midwest Outdoor Skills Training, northern Illinois
  • Wildlife Prairie Park, central Illinois
  • John Yost Survival Skills school, Madison