What is the allusion in the Hills look like white elephants?

In "Hills Like White Elephants," the hills symbolize the burdensome decision the couple faces regarding an unplanned pregnancy. The white elephants, traditionally seen as valuable but costly to maintain, allude to the idea that while the pregnancy may be seen as a burden, it also holds potential value and significance. This duality reflects the complexities of their relationship and the weight of their choices, ultimately highlighting themes of communication and conflict.