File:Guevo Upas (Poisoned Valley) near Batten in Java (Wellcome 726189i).jpg

Summary
Description: "Poisoned valley Guevo Upas near Batten in Java." Per Wellcome: Apparently depicts the arrival at the valley of Alexander Loudon and his friends, holding chickens with which to test the toxic fumes emerging from the ground, as described in Loudon's letter communicated to the Royal Geographical Society by John Barrow, 28 December 1831, and reported by various journals. Print : aquatint, with watercolour ; image 15.6 x 24.7 cm.

Credit: Java: human skeletons lying in a valley poisoned by volcanic gases, being watched by travellers. Coloured aquatint. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0), https://wellcomecollection.org/works/aa5yu3wr