Two sisters who decided to go for a kayaking adventure on the Arkansas River have made a historic find while out on the water.
Ashley and Erin Watt were rowing down the river in south-central Kansas when they reportedly saw a skull protruding from a sandbar.
According to the Kansas Department of Wildlife, Parks and Tourism, when they pulled it out, they saw the skull had massive teeth, some the diameter of a human thumb.
The pair had discovered a huge bear skull that experts believe is hundreds if not thousands of years old, news.com.au reported.
![The girls posted about the skull on Facebook. Photo / Kansas Dept of Wildlife, Parks and Tourism](https://www.nzherald.co.nz/resizer/v2/N64WT3TEMPUEHTGBTJTFP44C2A.jpg?auth=209682f196d46816964b13e656a00078e32ebd834635c2f7483b602f88b6f536&width=16&height=9&quality=70&smart=true)