Simple Encounter tables for Hill terrain for Low (1-4), Mid (5-10) and High (11+) levels. Support for Volo's Guide to Monsters and Mordenkainen's Tome of Foes.
Extra tables for hill locations, beasts, humanoids, hazards, giants, gnolls, goblinoids, kobolds and orcs.
Tables use 2-20 range designed with unusual and dangerous encounters occurring less often using 1d12+1d8 or 2d10. Or use 1d20 and ignore this.