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frame: 1505 x 2375 x 200
Turner followed his usual process of painting the sky with unmodified oil paint. Over this lies a transparent glaze, rich in oil, which has become greenish-yellow and more obvious now. Turner strengthened the mountain tops, some clouds, and a building, by adding similar paint after the original had cracked as it dried. This paint retains texture and body, and may have included resin or megilp, which would account for the early crack formation.
The landscape and receding hills were probably painted with the wax-oil formulation he used in other paintings to give a smooth translucent paint, enlivened with dabs of megilp-rich impasto for details. In the shadows of the landscape Turner probably used a paint rich in lead-based driers, which would have formed the wide cracks very quickly, even as it dried.