Explorers drilled in Meteor crater in Arizona for years, looking for a massive iron/nickle deposit. They never found any large mass. Just small bits and pieces. Biggest was a couple of yards across.
Ends up the meteor that in Arizona plowed into the ground at an angle. When they tried to drill down, they found nothing. Sideways, they found lots of remnants.
Part of it is on display at the museum beside the crater.