Mount Arapiles, Rock climbing summit in Tooan State Park, Australia.

Mount Arapiles is a quartzite formation rising about 140 metres above the Wimmera plains, roughly 10 kilometres west of Natimuk. Its cliffs show decimetre- to metre-scale cross-stratification and lateral accretion surfaces, and many beds contain well-rounded pebble clasts. A granitic intrusion below the rock about 400 million years ago caused contact metamorphism, cementing the sediment and giving the rock a red-orange tinge from iron oxide.

Major Thomas Mitchell made the first European ascent in 1836, naming the mountain after similar hills in Spain. This climb marked the beginning of European exploration and mapping of the region.

The Wotjobaluk name for the formation is Djurid, and the Djurid Baluk clan used its hard sandstone to make stone tools, sheltering in its gullies and small caves. A 1992 survey recorded 42 Aboriginal archaeological sites on the mount, including stone quarries, scarred trees and rock art.

Centenary Park at the base offers camping, fireplaces, and picnic tables as a starting point for activities. The location is easy to reach and equipped with basic amenities for visitors.

The mountain holds more than 2,000 established climbing routes at various difficulty levels. This makes it a recognized destination for climbers seeking different technical challenges.