The map ext_ac_wasteland is a variant of ac_wasteland with CTF flags.
The map ext_ac_wasteland is based on the version of ac_wasteland found in ACR 2.5.8, that also the one of ACR 2.5.9. They exactly have the same structure. The two CTF flags are the only difference between these two maps.
There are five flags in this map, three secure flags and two CTF flags.