Complex sentence: There are more than 20 small and large glaciers and some 50 mountain peaks within the park, and two smaller rivers, the Adygene and the Ak-Sai, originate from these glaciers' melting waters.
Split into simpler sentences: There are more than 20 small and large glaciers and some 50 mountain peaks within the park. Two smaller rivers, the Adygene and the Ak-Sai, originate from these glaciers' melting waters.