Exo Terra Big Rock Medium Ceramic Cave with Lid PT3193

The ET Big Rock Medium Ceramic Cave is a humidity-regulating hide designed for reptiles, amphibians, and invertebrates kept in vivariums and terrariums. Without a reliable, moist retreat, reptiles are prone to stress-related issues, poor sheds, and suppressed appetite — this hide addresses all of that through the natural properties of its ceramic construction, not through any additional equipment.

How the Ceramic Works

The ceramic material is hygroscopic, meaning it naturally absorbs and slowly releases moisture from the built-in water reservoir. This regulates both humidity and temperature within the hide passively, reducing the sharp fluctuations that can compromise an animal's health. Maintaining appropriate air humidity also supports respiratory health over the long term.

Dimensions and Capacity

The medium size measures 11cm (H) x 15cm (W) x 18cm (D), with a water reservoir capacity of 75ml. The rock formation design adds three-dimensional structure to the enclosure, making use of vertical and floor space simultaneously.

Shedding, Egg-Laying, and Everyday Use

The moist microclimate created inside the hide supports hydration and assists the natural shedding process, making it particularly useful for species that struggle in drier setups. Filled with moistened moss — sphagnum or forest moss work well — the hide also functions as a viable egg-laying site for reptiles, amphibians, and invertebrates. The removable lid gives direct access to check on animals or retrieve an egg clutch for incubation without disturbing the rest of the enclosure.

Key Features

• Hygroscopic ceramic construction passively regulates humidity and temperature
• Built-in water reservoir (75ml capacity) should be kept filled to maintain optimal microclimate
• Removable lid for straightforward access and egg clutch retrieval
• Suitable as a hiding place, sleeping area, and egg-laying site
• Reduces temperature and moisture fluctuations within the hide
• Natural rock appearance integrates into any vivarium or terrarium setup
• Suitable for reptiles, amphibians, and invertebrates

For keepers who want a hide that does more than just provide cover, the ET Big Rock Medium Ceramic Cave offers a genuinely functional microhabitat — no misters, no additional equipment, just consistent conditions where your animals need them most.