Here is an example using FastNBT to print a whole chunk.
use fastnbt::Value;
use linearify::{self, Region};
fn main() {
let mut region = linearify::open_linear("./r.0.0.linear").unwrap();
let buf = region.chunks[0].clone().unwrap().raw_chunk;
let val: Value = fastnbt::from_bytes(buf.as_slice()).unwrap();
println!("{:?}", val);
}