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What an Arch EarthCache

Hidden : 3/6/2016
Difficulty:
1.5 out of 5
Terrain:
2.5 out of 5

Size: Size:   other (other)

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Geocache Description:

This is an Earthche there is no physical container to find.

 

This Earthcache is located 35 kilometres south of Smithton in the Trowutta Caves State Forest. This stunning natural geological feature formed by two collapsing cave systems is a must see. Take a 15 minute walk through the temperate rain forest and emerse your self in a magical setting.

The listed coordinates will take you to a sign and Trowutta Arch.

 

 

This rare naturally occuring arch was created by the collapse of a cave and the creation of two sinkholes either side of it - one dry and one water filled.

This water filled sinkhole is geomorphologically classified as a cenote - a steep, walled water - filled sinkhole and is regarded as one of the best examples in Tasmania. It is more than 20 metres deep and is an important habitat for invertebrates.

 

This dolomite cave system was formed during the Neoproterozoic Era 1,000 to 541 million years ago.

 

 

To log a find on this Earthcache please answer the following questions and send them via message through geocaching.com. Any logs without answers will be automatically deleted after 2 weeks. Please do not post your answers in your online log. Once you have sent your email feel free to log your find, if there are any problems we will contact you.

 

1. Describe the colour, texture and type of rock forming the arch. How long do you think the arch will last? Why?

 

2. Eventually the ceiling totally collapses as it is no longer supported by the water table and a __ __ __ __ __ __ forms.

 

3. Optional - Photo of the Arch - water level changes throughout the year depending on rainfall a record of this would be appreciated.

 

We hope you enjoy our 1st Earthcache and take the opportunity enjoy this stunning location.Reference - Geology of Tasmania, Wikipedia

Additional Hints (No hints available.)