cow sounds that seem like whale sounds

The weekend gone I recorded some more bush sounds. Amid the recording I came across this sound. Which sounds rather like a whale ... but we were of course nowhere near the ocean
See what you think:

Its interesting, and makes me wonder how much of what we hear as recordings of whales is actually as much reverb and other sound recording artifacts of the environment (and all its reflections back).

This was recorded on a ridge top where the ridge curved around making a natural amphitheatre for the sounds.