Looking for a very loud crashing that continues for 3or4 seconds.
Imagine opening a closet door,& everything falls out,toys,glass objects,squeaky toys,heavy books,there could even be a short ,less than a second delay,& then 3 or 4 more seconds of stuff falling,crashing,braking,& tumbling to the ground.
I found two sounds. Are they any good for you?
Both require attribution.
I was using http://www.freesound.org/search/?q=falling+down and looking at time (something between 3 and 10 seconds) and waveform (something with many peaks).