Campbell's Hole Volcanic Dyke 3
Posted by: 
3l diesel
S 34° 43.588 E 150° 50.665
56H E 302630 N 6155174
A volcanic dyke emerges in a line in a tidal rock platform and forms a small escarpment.
Waymark Code: WMBBA7
Location: New South Wales, Australia
Date Posted: 04/29/2011
Views: 14
This dyke forms the third point of interest in Earthcache "Campbell’s Hole Volcanic Dykes" GC311VW looking at the dykes in this area.
This dyke follows in the same general direction of the nearby waymarked dykes, but is much thinner close to the cliff with a thickening where it eventually forms an escarpment of about 500mm height and the level of the rock platform increases.
Could there be a relationship between the increased height of the rock platform as we look north and the formation of the dyke? Perhaps the rock platform is underlain by the volcanic rock and the whole platform uplifted as a unit. Maybe the dyke formed earlier than the rock platform and it became a barrier at which the rock platform built up behind. These are the writer's conjectures only. Feel free to dispute and provide alternate explanations! But these conjectures will be further developed at Dyke 4.
It should be noted for personal safety that the rock platform faces strong surges from the ocean and water can flow fast and in high volume across the upper rock platform. Inspection should be timed with calm weather and low tides. Be aware that wave action is unpredictable and large waves "come from nowhere" even on apparently calm days.
Waymark is confirmed to be publicly accessible: yes
Parking Coordinates: N 34° 43.704 W 150° 50.256
Access fee (In local currency): .00
Requires a high clearance vehicle to visit.: no
Requires 4x4 vehicle to visit.: no
Public Transport available: no
Website reference: [Web Link]
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Visit Instructions:
No specific requirements, just have fun visiting the waymark.