The column-like cells that lie under the epidermis are called the stratum spinosum.

Here's why:

* Stratum spinosum is the layer of the epidermis that sits directly beneath the stratum granulosum.

* It's composed of keratinocytes, which are the most abundant cells in the epidermis.

* These keratinocytes are connected by desmosomes, which are strong cell junctions that give the cells a "spiny" appearance under a microscope.

Let me know if you'd like more information about the epidermis or any other part of the skin!