Port Mulgrave harbour was built 1856-7 to ship ironstone from shore and adjacent mines - this is the silted up harbour (boats at cliff foot for scale!) To the left - the blocked up entrance to the Grinkle Mine/Seaton Drift.  Seams mined included the Main Seam in the Cleveland Ironstone, and Top Seam in the Dogger
It's a long climb down to Port Mulgrave Sandstones at top of cliff, then shales below
Kettleness in the distance (next bay down the coast) - shaped by the alum workings Pit props evident (bottom left of photo).  Port Mulgrave mine was worked from the 1850s to 1881.
Rock platform exposed as the tide goes out
Ammonites in the mudstones; also belemnites Some faulting apparent in the bedding - Mulgrave Shale Member (Jet Rock) of the Whitby Mudstone Formation, Early Jurassic
My pencil for scale - before I lost it!  Anyone seen a grey pencil? Mudstones in the cliff
Large nodule in the shaley layers - this is approximately 2 metres wide From the cliff top, the channels cut into the rock platform for loading can be seen
Possibly a "millstone" limestone dogger in the Top Jet Dogger? Phew!  Seemed an even longer climb going up!

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