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Fort Island EarthCache EarthCache

Hidden : 4/27/2007
Difficulty:
1.5 out of 5
Terrain:
1 out of 5

Size: Size:   other (other)

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Geocache Description:

Fort Island / Griffiths Park in Fairlawn, Ohio is a city park that offers a mile-long, wheelchair-accessible journey through thousands of years of history.


The posted coordinates are for the parking area. From here, you will proceed to the trailhead, which can be seen from the parking lot. All of the interpretive signs will be found along the main trail, which is mostly boardwalk with some paved areas. There is little to no grade along most of this trail. The only steep area is at the “Upper Fort Island” sign, which can be bypassed if necessary, so I would consider this cache to be wheelchair accessible. All the signs necessary to answer the questions for this cache are located on the main trail, but I'd encourage you to explore the Marsh boardwalk, the Wet Woodlands Loop, and the dirt trails on top of Fort Island and Beech Island if you can. The main trail makes a loop through the park, so it doesn’t matter which direction you start in. Follow the arrows to Fort Island, Beech Island, and the Kettle Formation to see evidence of the glaciers that shaped our landscape.

For nearly two million years, Ice Age glaciers covered 2/3 of the State of Ohio. These massive sheets of ice formed the landscape we know today. On your journey, you will cross Schocalog Run and see several interesting glacial features while walking through Fort Island Park. You may also learn about Native Americans in this area and about local biodiversity as you read the signs along the trail.

Bogs are common ecosystems in areas formerly covered by glaciers. A bog is a wetland area characterized by highly acidic peat soil. Peat is formed by dying vegetation that does not decay completely and is subjected to pressure. Another nearby example of a bog is the Kent Bog State Nature Preserve in Kent.

Both Fort Island and Beech Island are higher in elevation than the surrounding peat bog. They are drier and have a different type of soil, so different kinds of trees and plants grow on the islands than in the surrounding bog. Both “islands” are glacial kames. Glaciers collected sand and gravel sediments in their travels. In some cases, meltwater streams formed in the glacier. The liquid water moved these sediments and deposited them in large, layered piles. When the glacial ice melted away completely at the end of the Ice Age, the piles of sediment remained, forming hills called kames. Similarly, sediments collected in the bottom of the meltwater streams. When the ice melted, these sediments formed long, twisting ridges where the stream used to run through the glacier. These ridges are called eskers. North of Fort Island is an esker formed in this way. Kames and eskers are common formations from Kent down to Canton and Massillon.

Across the Midwest, kettle holes and kettle lakes can be found. The weight of large chunks of ice left behind by a retreating glacier caused depressions to form in the land. When the ice finally melted away, a large hole was left behind. Often, lakes formed, like Punderson Lake at Punderson State Park in Geauga County. Sometimes, boggy wetlands developed in and around the kettle hole, such as the formation here at Fort Island Park.

LOGGING REQUIREMENTS: In order to log this Earthcache, I ask that you answer three questions based on some of the signs you’ll read while following the loop trail through Fort Island Park. Also, seeing a photo of you and/or your GPS at a site you find especially interesting would be nice (but not required, if you're shy or if you don't have a camera available!)

Here’s your quiz:

1. What could you find below 200 feet of glacial debris near Schocalog Run?
2. How much peat fills the small kettle hole formation in the southeast part of the park?
3. What is the name for a third type of glacial deposit? This kind of deposit may have blocked Schocalog Run to form a lake in prehistoric times.

Logs that are not accompanied, within a reasonable amount of time, by an email to satisfy these requirements will be deleted, because that’s the Earthcaching rule. Please don’t make me have to delete anything!

References:

Ohio DNR website
Camp, Mark J. 2006 Roadside Geology of Ohio. Missoula, Montana: Mountain Press Publishing Company
City of Fairlawn, Fort Island Park interpretive signage (Thanks to the City of Fairlawn and Laurie Beisecker for allowing this Earthcache!)

Additional Hints (Decrypt)

1. “Ntvat Obt” fvta 2. “Xrggyr Sbezngvba” fvta 3. Ynetr fvta ol Sbeg Vfynaq

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)