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The Rock Is Shaded:
The rock is shaded from the direct morning sun by the house. By noon it is in the open shade of a very old beech tree that grows beside a fieldstone Wall at the edge of the yard, and in late afternoon, sunlight is filtered through tall pine trees growing on the other side of the driveway. Until the trees leaf out in late spring and again in midsummer when the sun is high, the rock gets some direct sun.The movement of the earth's crust may carry the rock as much as 700km (454 miles) below the surface. Here the temperature and pressure will be even higher and the rock will begin to melt. Molten rock is lighter than solid rock and it will begin to rise up through the overlying rock towards the surface. If it reaches the surface as a lava flow it will immediately be ready for weathering and erosion and the start of a new cycle. More often the molten rock solidifies underground and then all the rock above it must be eroded away before it can begin the cycle again.
Perhaps the next larger stop opening will let in enough more light to record the detail desired in the shaded parts. If you are using a small stop to gain depth of field, a slow automatic exposure such as }{<> second or a very short time exposure will yield an excellent negative. Obviously, such slow exposures will require a rock-steady Camera support.
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