Here's a breakdown:

* High Latitudes: These are the areas closer to the Earth's poles (Arctic and Antarctic). The cold temperatures and ample snowfall support the formation and persistence of glaciers.

* High Altitudes: Even at lower latitudes, mountainous regions with high peaks receive enough snow to sustain glaciers. The higher you go, the colder the temperatures become, creating suitable conditions for glaciers.

While these are the most likely locations, it's important to remember that:

* Climate Change: Glaciers are sensitive to temperature changes, and climate change is causing many glaciers to melt and retreat.

* Other Factors: The specific locations of glaciers depend on various factors like precipitation, topography, and the presence of shade.

Therefore, while high latitudes and altitudes are the most common, it's possible to find glaciers in some unexpected places as well.