Adventure Club is based on Charrúa in central Montevideo and sells something most Uruguayan operators do not: expeditions with dates on them. Their calendar runs to trips like a week on Ilha Grande in Brazil or a December expedition to El Chaltén in Argentine Patagonia, booked months ahead and led from Montevideo.
That makes them the wrong people for a free afternoon in the capital and the right people if you are in Uruguay for a season and want to get out of it. They also run closer-to-home hiking and adventure days in the Uruguayan sierras, which fill the gaps between the big departures.
Dates and prices change with the season, so the published calendar is the thing to check. They answer WhatsApp on the number below.