Ordeal 1 is the first stage in the Disgaea 2: Cursed Memories Cave of Ordeals. It is a fight against eight Bow Masters, each equipped with a crystal bow. Though at level 60, the geo panel setup makes this stage way too easy, as it will result in crippling of the Bow Masters, resulting in a quite an ideal place to level up until around level 85 (unless you have CoO4, but this is for level 100 above).
There are also two +50% experience Null Geo Symbols on the edges of the map that you can throw onto the panels for even more experience. Using the Stronger Enemies bill also makes this map an excellent level grinding map for some time.