Trajectory prepositions (a través de, alrededor de)

When navigating a dark cave system, use prepositional phrases of spatial trajectory to describe your path.

A través de (Through)

Use a través de to describe movement passing through a space or across a boundary.

We walked through the dark passage.
Caminamos a través del pasadizo oscuro.
The bat flew through the cave.
El murciélago voló a través de la cueva.

Alrededor de (Around)

Use alrededor de to describe movement circling or surrounding an area or object.

Remember that when the preposition de is followed immediately by the masculine singular article el, they contract to form del.

We kept walking around the underground lake.
Seguimos caminando alrededor del lago subterráneo.

A lo largo de (Along)

Use a lo largo de to describe movement continuing down the length of something, like an underground river or a long tunnel.

We rowed along the underground river.
Remamos a lo largo del río subterráneo.
The echo was heard along the passage.
El eco fue escuchado a lo largo del pasadizo.