River_of_rocks_at_the_Hawk_Mountain,_Pennsylvania_2007.jpg
Size of this preview:
800 × 450 pixels
.
Other resolutions:
320 × 180 pixels
|
640 × 360 pixels
|
1,024 × 576 pixels
|
1,536 × 864 pixels
.
Summary
| Description |
English:
The "River of Rocks" at the Hawk Mountain, Pennsylvania. According to www.hawkmountain.org, this formation is a mile-long boulder field, up to 40 feet deep, which was deposited 10,000-12,000 years ago (the end of the last ice age), when glaciers stopped 40-50 miles to the north of this location. A periglacial process cracked boulders from the ridgetop that gradually slid to their current position. The photo was taken on July 31, 2007
|
| Date | 20 August 2007 (original upload date) |
| Source | Transferred from en.wikipedia to Commons. |
| Author | Randy42724 at English Wikipedia |
Original upload log
The original description page was
here
. All following user names refer to en.wikipedia.
- 2007-08-20 03:31 Randy42724 1536×864×8 (469973 bytes)
Licensing
|
This work has been released into the
public domain
by its author,
Randy42724
at
English Wikipedia
. This applies worldwide.
In some countries this may not be legally possible; if so: Randy42724 grants anyone the right to use this work for any purpose , without any conditions, unless such conditions are required by law. |