Yes folks! That is a thorn tree. A variety of acacia also known as locust trees. The country is lousy with them. What particular variety this is I have no idea, but the thorns are at least 3 inches long.
Quinn was pricked by one through his sock at school one day and he didn't really think anything of it until later on that night when his ankle swelled up to look like he had cankles. And it was really sore. Luckily it went down after a day or two. But god help the guy who falls into one of those spiny buggers.