The discovery was announced in 2014 of what proved to be nearly 40,000 years old what, in caves in Sulawesi, Indonesia?

Question

In 1936, whose paper "On Computable Numbers, with an Application to the Entscheidungsproblem" proved that a machine could perform any conceivable mathematical computation if it were able to be represented as an algorithm?

Answer 1

Paintings
The walls of the caves show pictures of animals and stencils of large and tiny human hands outlined against red paint. Dating shows the paintings range from 27,200 to nearly 40,000 years old, which are the oldest cave paintings so far discovered..