This is the 10665th most frequent Russian word.
вокзалах
"Вокзалах" means "railway stations" (prepositional plural form).
In this sentence, 'вокзалах' is used to refer to train stations in the plural dative case, indicating a location where there are many people.
Вокзалах всегда много людей с чемоданами.
Train stations are always full of people with suitcases.
Here, 'вокзалах' is in the plural prepositional case, used with the preposition 'на' to denote location for the action of finding information.
Много информации о расписании было найдено на вокзалах.
A lot of schedule information was found at the train stations.
In this case, 'вокзалах' again is in the plural prepositional case, indicating the location where shops and cafes are found.