Why is Hvítserkur so popular ?

Hello,

I'm still trying to plan our 12 days in Iceland, and what's giving me the most troubles is the zone between Hofsós and Kirkjufell.

One of the only interesting point is Hvítserkur, but it takes at least 1h30 to go there (roundtrip) and all I can see is a nice rock...

As we will be relatively short in time during the last 2 days and and need to get back to Rek from Akuryeri, I'm thinking about bypassing Hvítserkur so we can spare 1h30+ of our time, because I don't understand what's so nice to make it so popular.

Thoughts ? Thank you !