Can you help me understand these coordinates

Question

Listed in this link...

http://www.mountainzone.com/mountains/detail.asp?fid=2482956

Cerro de Punta Summit

Latitude: 18.172458

Longitude: -66.591839

Then, I tried using GoogleEarth to find the summit, but instead, I've found myself at an altitude of 557'.

So I thought, okay, let's use GoogleEarth to find the El Yunque summit, at least I know where that one is for sure, and then I'll cross check it with the website...

With GoogleEarth:

I found an altitude of 3,460' at

18* 18' 37.56" N

65* 47' 28.48" W

Although, the website lists it as

Latitude: 18.310509

Longitude: -65.791274

http://www.mountainzone.com/mountains/detail.asp?fid=2485056

What am I not getting?

Answer 1

Enter the coordinates in this format:  

Cerro de Punta Summit (4390 ft.)

18° 10' 20.8482" N,  66° 35' 30.6198" W

El Yunque Summit (3,526 ft.)

18° 18' 37.8318" N ,  65° 47' 28.5864" W