I literally thought that Bikini was Bikini Bottom. Huge Spongebob fan! "No Patrick, mayonnaise is not and instrument. Horseradish is not an instrument either."- Squidward. lol ;)
Carlsbad Caverns is a national park in New Mexico, USA. It is on the border of Texas and New Mexico, close to Guadeloupe Mountains which is on the Texas side.
Exactly! I thought, "Well, I guess a rainforest isn't really a landform..." Then there was Great Barrier Reef, which is definitely not a landform. And I was upset.
I tried basin and rainforest - here (in UK) it would always be called the River Amazon rather than the Amazon River, so river didn't occur to me for some time even though it's the most obvious answer.
What does it sound like? Apperently it is quite loud, cause you appear to have gone a bit deaf, you might not have been aware, but you were screaming you know..
I was stationed in Bremerton for many years. Seen the sound a lot. Used to do dives around the Hood Canal Bridge. Also the movie Officer and Gentleman was filmed by the sound too in Port Townsend, WA.
Further research indicates that, despite the name, Biscayne is not a key. Rather, it is a barrier island, with a significantly different geological makeup than the keys. I would definitely pick a different answer for this one.
How US-centric should it be? And how US-centric would it have to be in order to be considered "slightly" too US-centric as opposed to "far" too much so?
Also, Biscayne is a bay as well as a key. Possibly a key that is not also something else would be a better clue.
Baffin island could also be Baffin Bay
Tibetan Plateau could also be Tibetan Empire
Iberian peninsula could also be Iberian union