Omo National Park
Omo National Park is in Ethiopia. The Lower Valley of the Omo, a site where prehistoric human remains have been found, was declared a UNESCO World Heritage site in 1980. The park is part of the famous Central and Southern Ethiopia National Parks and Tribes Circuit that includes Abijatta Shalla Lakes National Park, Bale Mountains National Park, Nechsar National Park, the proposed Megado Podocarpus National Monument, and Mago National Park. Reasonably priced service providers include Ecotravel Ethiopia ☎ ++251 (0) 911-440-915" 
Flora and fauna
Getting into the area is not too difficult. First take a bus to Arba Minch from any of the available bus companies centered around Meskel Square. From Arba Minch it is possible to take a bus to Jinka from the main bus station. It's located just past the roundabout from where you will be dropped off. Ask the touts there where the Jinka bus is. They will quote you an outrageous price, up to 400 Birr. Do not pay any more than 150 Birr. This includes your luggage and any service tips they may ask for. It is better to store your luggage on the roof as the boot will fill up with dust. The trip takes approximately 8 or so hours most of it on unpaved roads. Buses from Jinka into the national park depart from the main Jinka bus station between 6:30 and 6:45am. In spite of what some of the touts may tell you, it is allowed to take those buses into the park.
There are a number of fees once you are in the park. There is an entrance fee, a security fee (200 Birr), a village fee (100 Birr) and a photography fee (100 Birr). Guides who are with you will also ask for a 100 Birr guide fee. Note, if you take the local bus into the park, many of these fees will not apply, especially the security fee. There is little danger from the tribes in spite of what touts and other guides may tell you.
Getting around Jinka and other small villages just require your two legs. They are not that big. Between towns it is necessary to take minibuses. Once again, do not pay more that 150 Birr including luggage.
There are many small family-run restaurants. Most serve Injera priced around 20-30 Birr. Beer is around 20 Birr and 2L water is around 10-15 Birr.
There are guest houses and hotels of varying quality. Goh Hotel in Jinka has hot water, proper toilets and Wi-Fi.
Buses from Jinka leave to Arba Minch when they are full from the main bus station.