The leaves can get bigger than that, if in mostly shade & given TONS of water. It looks like Colocasia esculenta: https://www.gardenstew.com/plantstew/42549 Leaves of some kinds of "elephant ears" can become much bigger than a person: https://www.etsystudio.com/listing/468622861/giant-elephant-ear-colocasia-gigantea?ref=related_like