A well-signposted track loops away to the south from close to the main Elsa gate, climbing up and over the hills before rejoining the main valley after 14km. En route, you’ll have some outstanding views of Mt Longonot, and there’s generally more wildlife here, including giraffes, various antelope species and the odd buffalo or two. The Buffalo Circuit would be a fairly strenuous walk or cycle, but it’s accessible by 2WD vehicle, except after heavy rain.
Close to the Elsa gate end of the trail, a side track leads for 2km to the Obsidian Cave , where you’ll find moderately interesting examples of the glassy black rock so characteristic of Rift Valley lava flows.