Exactly how massive are 50-foot waves at Mavericks?

HALF MOON BAY, Calif. (KGO) -- Experts say that some of the biggest waves at Mavericks on Monday were as massive as 50 feet tall. Just how big is that?

VIDEO: 100 scary seconds: What it's like to wipe out on a 50 foot wave at Mavericks in Half Moon Bay

Here's a look at how the swells measure up to everyday objects.

VIDEO: Brave surfers take on massive waves at Mavericks in Half Moon Bay

The Mavericks surfing competition may not even take place until next month, but these brave surfers took advantage of waves that grew up to 50 feet high.

Find more stories and videos on Mavericks.