When you want to describe something "enclosed by" something else, it's useful to have a variety of synonyms to use in order to avoid repetition and add variety to your language. Some alternative phrases to consider include "surrounded by," "hemmed in by," "bounded by," "contained within," "sheltered by," "circumscribed by," "girt by," and "encompassed by." Each of these phrases can add a slightly different shade of meaning to your writing, helping you to create a nuanced and evocative description of the world around you. By incorporating a range of synonyms for "enclosed by" into your writing, you can expand your vocabulary, increase your descriptive powers, and create a more engaging and vivid reading experience for your audience.