Niagara Falls was formed starting more than 12,000 years ago at the end of the Ice Age when large torrents of water were released from the melting ice, draining into the Niagara River. The water plunged over the edge of the Niagara Escarpment – to what is now known as Lewiston, NY. Eventually, the force of the water wore away the rock layers and Niagara Falls moved upstream, reaching its present location. Year after year, the formation continues with the annual freezing and thawing of the Niagara River, along with gradual erosion and periodic rock-falls. Remedial work has been completed to preserve the Falls and the volume of water has been reduced by diversion for hydroelectric power..
source :(https://www.niagarafallsusa.com/planning-tools/about-niagara-falls/history/)
Stamp:
- Raoul Wallenberg with Schutz-Pass
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