Canyon, A deep valley with steep sides carved by a river over time., Cave, Formed by groundwater erosion dissolving limestone over time., Cliff, A steep rock face formed by waves hitting the coastline., Delta, A landform at the mouth of a river where sediment is deposited..

द्वारा

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?