134 ft
Distance
-12 ft
Descent
00:57:49
Avg time

Details

  • Activities
    • Mountain Bike
  • Riding Area
    Griffin Bike Park
    Terre Haute, Indiana
  • Difficulty Rating
  • Voted Difficulty
    Double Black Diamond (1 vote)
  • Trail Type
    Singletrack
  • Bike Type
    DH, AM, Fat
  • Trail Usage
    Biking Only
  • Direction
    Downhill Only
    Popular direction shown
  • Climb Difficulty
    Double Black Diamond
  • Physical Rating
    Extreme
  • Dogs Allowed
    Yes
  • TTFs on Trail
    Drop
  • Global Ranking
    #4396 in Mountain Biking
  • Local Popularity
    50 in Mountain Biking
  • Year Opened
    2017
  • Land Manager
    Vigo County Department of Parks and Recreation

This short trail is double-black-diamond drop--a steep descent on a small ridge with rocky outcroppings. From the landing riders make a right to return to Alpha Trail.

Access Info

This expert drop is accessed from Alpha Trail by crossing under the Proving Grounds wooden gantry and bypassing the first (advanced) drop.

More Stats for Proving Grounds Expert Drop bike trail
  • Altitude change
    -13 ft
  • Altitude min
    633 ft
  • Altitude max
    647 ft
  • Altitude start
    646 ft
  • Altitude end
    633 ft
  • Grade
    -9.676%
  • Grade max
    -12.977%
  • Grade min
    -9.273%
  • Distance down
    85 ft
  • Distance flat
    29 ft
  • Avg time
    00:57:49
  • view trail stats
Status:
on Sep 5, 2019
Dry
Avg: 5 (2 votes)

view (313)
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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Trail Ridden Direction
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
ContributeDetails
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular

LEGEND
Trail Difficulties
  • Access Road/Trail
  • White
  • Green
  • Blue
  • Black
  • Double Black Diamond

Trail Report Status
  • Clear / Green
  • Minor Issue / Yellow
  • Significant Issue / Amber
  • Closed

  • Land Owner Overlay
  • Wilderness (typically no bikes in USA)
  • BLM (public)
  • USFS (Wildlife sanctuaries darker than usfs)
  • State land
  • Indigenous
  • Military
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
  • Map Markers
  • trail Trail Head
  • photo Photo
  • place Directory Listing
  • region Riding Area
  • TTF TTF
  • Parking Parking
  • Viewpoint Viewpoint
  • Information Information
  • Warning Warning
  • Directions Directions
  • Water Fountain/Source Water Fountain/Source
  • Sight Sight
  • Restrooms Restrooms
  • Gate Gate
  • Camping Camping
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Table or Bench eBike Charging Point
  • Other Other
      Directions to proving-grounds-expert-drop trailhead (39.338690, -87.364200)
      update trails status or condition

      Proving Grounds... Trail Reports

      Recent Ridelog Activity on Trail

      Past Week
      • 3 rides
      • 8 miles avg distance
      6 Months
      • 55 rides
      • 9 miles avg distance
      All
      • 245 rides
      •  

      Photos

      no photos have been added for Proving Grounds Expert Drop yet, add a photo.

      1 Review & Comments

      • + 1
      flag JRowe10 (Jun 30, 2019 at 15:37)
       IDK what I rode down, but this elevation profile is so wrong. Whatever I went down was the steepest hill I have ever ridden. MUST drag the brakes at least half way then let off and hang on to the bottom. HARD g-out.
      [Reply]

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