Yosemite Pines RV Park is one of the most beautiful rv parks out there. This park is open all year and offers a ton of activities. You can pan for gold, hike and explore the beautiful mountains around Yosemite.
If you want to truly enjoy the outdoor experience you might want to consider going camping and rafting. These two activities are extremely popular during the summer months but it could lead to a totally unique experience during the winter months. Call ahead and make sure the outfitters are open before you head out to the area in the winter.
If you plan on taking a whitewater rafting trip down the river make sure to bring some warm clothes to change into because the water temperature is approximately 48 degrees year round and you are going to get wet when you go rafting down the river.