Castle on the Cliff - Crater Lake, OR
Posted by: Groundspeak Premium Member saopaulo1
N 42° 54.695 W 122° 08.572
10T E 569964 N 4751352
Quick Description: One of a few signs at Sinnott Memorial Overlook in Crater Lake National Park. Many of the plaque here deal with the lake's geological history.
Location: Oregon, United States
Date Posted: 8/5/2018 5:55:57 PM
Waymark Code: WMYXB5
Published By: Groundspeak Premium Member Volcanoguy
Views: 2

Long Description:
"Not all the caldera features are from flows of lava. The 200 foot high pumice castle is an example of the complex, explosive history of Mount Mazama. It is the result of gas rich volcanic eruption that took place here about 70,000 years ago.

Tuff Times.

A glowing avalacnhe deposited numerous layers of hot pumice. As the other layers accumluated the lower sections, compressed into a hard volcanic rock. Welded tuff is the product of this intense heat and compression."
Historic Topic: Geological

Group Responsible for placement: National Parks Service

Marker Type: Trail

Region: Southern Oregon

County: Klamath

State of Oregon Historical Marker "Beaver Board": Not listed

Web link to additional information: Not listed

Visit Instructions:

Include your thoughts and observations pertaining to this location and your visit. Provide any additional history that you are aware of that pertains to this location. If the marker commemorates a historic building tell us what it is used for now or share with us the circumstances of an earlier visit to bring this locations history to life.

Please upload a favorite photograph you took of the waymark. Although visiting this waymark in person is the only thing required of you to receive credit for your visit, taking the time to add this information is greatly appreciated.

Be creative.

Search for...
Geocaching.com Google Map
Google Maps
MapQuest
Bing Maps
Nearest Waymarks
Nearest Oregon Historical Markers
Nearest Geocaches
Nearest Benchmarks
Create a scavenger hunt using this waymark as the center point
Recent Visits/Logs:
Date Logged Log User Rating  
OregonTrailRanger visited Castle on the Cliff - Crater Lake, OR 11/27/2020 OregonTrailRanger visited it