This could be a Sopwith Camel without its guns. At least these details don't disagree:
- cowling's shape and front opening
- 9-cylinder radial engine (tappett rods lost when crushed by the cowling)
- 8-bolt prop hub
- wicker seat's weave spacing (many photos if you search "sopwith camel seat")
- fuel tank's position and shape match that in the Haynes Manual
- location of the remnants of the cabane struts.
Although some of these details are common to many aircraft of the period, it's noteworthy that this many details agree in one place. A statistical argument may be the best one can do with what's been given.
It definitely looks like the nose of a WW1 or pre-WW2 aircraft. You can clearly see the pilot seat with the fuel tank behind it. In addition you can see the engine with the rest of the two blade propeller.
I personally think that it is most likely a post WW1 but pre WW2 aircraft because it appears to have a NACA Cowling, like on this image from Wikipedia:
It was developed in 1927. As for the aircraft type, for me personally it's hard to tell what it could be.
Source: Wikipedia (https://en.wikipedia.org/wiki/NACA_cowling)