My, it is nice to have someone appreciate a little of the unexpected.

[They wave bye-bye to the town of good eatin' as they follow the tightly packed and many sets of footprints until they reach a clearing where the footprints simply stop in front of an altar. The altar is crude and made of stone. Four pedestals roughly in the shape of some four legged animal support each corner. Three are in a bowing position while one is rearing up.

For those with supernatural senses it feels odd and definitely has a residue of strong magic. For those without, it just looks bizarre.]

A portal?